Air Conditioning Glendale


Are you able to get anything done when you’re feeling hot, sticky, and irritable? Just about no one is, and that’s because our bodies are telling our minds that we need to stop working when we feel that way so that we don’t overheat. When you’re trying to get your home or office cool, Glendale air conditioning is important! If you live or work in the area, you’ll definitely need to have a high quality working air conditioner!

Air conditioning is a phrase that is thrown around on an everyday basis but do you know what air conditioning really is? Air conditioning is actually a phrase that can be used to describe a number of different things, but generally we think of it as a way to cool or de-humidify the air in our homes or work. A Glendale air conditioner is actually very necessary as this area of the world, as the heat can cause anyone to not want to do anything no matter whether they’re at work or trying to relax or do chores at home.

Most Glendale air conditioning systems are actually central
air systems, which is a wise idea because most residents find themselves using their air conditioning often far more than their heater or furnace. There are a wide array of different makers of air conditioning units. It is our job to help you to stay cool and comfortable, and we do that by not only installing air conditioning units, but also by servicing them and repairing them.

If you need your AC maintained or installed, give us a call!

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Solar Panels for Business

Whether you’re looking to save money, save the environment or secure future energy generation for your business, we are the experts in commercial rooftop installations having installed solar panels for over 500 businesses in the UK ranging from SME’s to large corporates and iconic new-builds.

Experience a multi-award winning service from a company driving the market through innovation. Our consultative approach to solar offers you industry-leading advice and solutions from financing a solar panel installation, to designing a system with your interests and motives in mind, right through to having your own designated project manager to ensure an effective installation and handover.

We also deliver excellence in health safety, innovating new methods and techniques to work even safer to give you peace of mind whilst your business continues to operate.

Our relationship with you doesn’t stop after the installation; we offer a comprehensive operation and maintenance service to monitor your solar panels (in real-time) and respond to any faults throughout the life time of your system.

Solar panel installation schools

Why should I consider solar panels for my business?

Despite the recent cuts to the feed-in tariff, solar panels are still a viable option that should be a serious consideration for businesses all over the UK for one or more of the following reasons;

Solar panels help your business save money by generating free, green electricity to be used onsite, lowering your energy demand from the grid during daylight hours and saving you thousands of pounds every year on energy bills.

Generating your own electricity from solar reduces your carbon output and could offset most, if not all, of your business’ carbon emissions. With climate change a major topic of concern at the moment, green initiatives are a popular strategy for a business to achieve competitive advantage in their industry and strengthen relationships with their supplychain and customers.

It’s an alarming reality that the grid is currently struggling to generate significant electricity supply to meet the growing demands of the UK. The cost of your business going off-grid needs to be considered against a solar panel installation that would keep you in supply should the unthinkable happen. The Government have already introduced mandatory energy audits from large businesses through the mandatory Energy Savings Opportunity Scheme, hinting that future energy usage from the grid could also be regulated.

Business finance options for solar panel installations

Even though the feed-in tariff was heavily cut in January 2016, it’s still possible for your business to make good financial returns if buying a solar PV system outright. However, for businesses that don’t have the capital, or would like the benefits of solar but prefer to invest their capital elsewhere, we can offer several competitive finance options via our network of specialist industry finance partners.

If your business meets certain criteria, you may be eligible for a fully funded system through a power purchase agreement, where solar panels are installed on your roof at no cost to your business and generated electricity is purchased back from the funder significantly cheaper than your existing supplier; saving you thousands of pounds a year off your energy bills.

Solar panel installation schools

Battery storage solutions

Integrating a solar panel system with an onsite solar battery storage solution is also a great way to leverage additional financial and energy security benefits for your business. By storing and using all of the self-generated electricity instead of exporting surplus energy back to the grid, you can realise even greater savings, in addition to further reducing your reliance on the National Gird. Having energy stored onsite can also protect your business from power cuts and allow you to remain operational.

The commercial rooftop experts with multi-sector experience

We’ve always maintained focus installing solar panels on commercial rooftops allowing us to become experts in our field, whilst others have diluted their experience with ground mount solar and are now forced into back into the rooftop market due to reduced Government support for ground-mount solar farms; nobody knows solar in a commercial rooftop environment like we do.

As previously highlighted, we have extensive experience across all industry sectors working with a wide range of businesses from small independent retailers installing a handful of solar panels, up to multi-megawatt blue-chip manufacturing companies such as BMW.

Don’t take our word for it – view our extensive range of commercial solar panel case studies to see the businesses we have worked with in your industry and how we’ve helped them achieve their various green and energy related goals.

Solar panel installation schools


Find Solar Companies in San Francisco, CA

San Francisco, CA Solar Companies

Why go solar in San Francisco?

  • Lower carbon footprint
    • Generate clean electricity
  • Financial incentives
    • Make solar more affordable
  • Reduce grid reliance
    • Become an energy producer, not just user

Lower your carbon footprint

By 2025, San Francisco hopes to reduce carbon emissions by 40% from their 1990 levels, helping to fight climate change and improve air quality.

By installing solar panels, you lower your carbon footprint and reduce the effects of climate change in San Francisco. Solar panels don t give off any harmful emissions when they generate electricity, meaning you can combat climate change without changing your lifestyle.

Financial incentives

San Francisco residents can access city and state incentives to make solar installations more affordable.

GoSolarSF is a city program that offers incentives based on solar system size to residents, businesses, and nonprofits. They also have low-income financing options to ensure that everyone has access to solar.

You can also access California Solar Initiative incentives managed by Pacific Gas Electric. Contact a solar installer to learn more about how much money you can save.

Reduce energy dependence

Installing solar panels makes you less vulnerable to unexpected electricity rate increases from utility companies.

Depending on the size of your system, you might even generate more electricity than you purchase from the grid, reducing reliance on PG E. In a time of volatile energy prices, becoming an energy producer, not just a user, can lead to big savings down the road.

Learn More.

Additional Resources

Additional Causes

Encourage greater transparency in California’s Healthcare. We are missing out on consumer tools using open federal marketplace data such as:


Thank You

Top 10 Cheapest (Best Value) Solar Panels

These prices are based on bulk purchases of a minimum of 25 solar modules – about the size of a large residential solar system (5 – 6 kW). Add 10-20% to the price if purchasing on panel-by-panel basis.

Output is King

Instead of evaluating a solar system by its capacity in kilowatts (kW), get your solar advisor to quote how many kilowatt-hours (kWh) the solar system is expected to generate in its lifetime. Divide this number with the cost of the system.

You are now left with how much you are paying for every kWh of electricity the solar panels produce ($/kWh). Divide again by hundred to get cents/kWh.

Electricity prices in the United States typically range from 8 to 17 cents/kWh. [1]

If you`re just comparing two solar panels, and the length of their warranties is the same, doing the same analysis for the first year (as opposed to their lifetime) is usually good enough.

Solar panels are typically warrantied for 20 to 25 years. The performance of solar panels slowly degrades over time. Solar manufacturers typically guarantee the power output of their solar panels to stay above 80% before the warranty expires.

Case Study

System 2 is superior from a financial standpoint and most homeowners would choose it for this reason. System 1 is a good option for homeowners that lack roof space for a less efficient (but cheaper) solar system.

We generally see that the less efficient and cheaper solar panels tend to produce more electricity in a year for the same price as more expensive high-efficiency solar panels.

If you want to look up the details for the specific solar modules, take a look at Solar Panel Comparison the largest database on the entire Internet where you can compare over 10,000 solar modules!

The Bottom Line

Any salesman will tell you that his solar panels are the best. Ask specifically for how many kilowatt-hours they will produce, divide by total costs (not panels or labor exclusively), and then compare to offers from other solar installers in your area.


Air pollution casts shadow over solar energy production
Durham NC (SPX) Jun 28, 2017 – Global solar energy production is taking a major hit due to air pollution and dust. According to a new study, airborne particles and their accumulation on solar cells are cutting energy output by more than 25 percent in certain parts of the world. The regions hardest hit are also those investing the most in solar energy installations: China, India and the Arabian Peninsula. The study. more

Deceleration of runaway electrons paves the way for fusion power
Gothenburg, Sweden (SPX) Jun 23, 2017 – Fusion power has the potential to provide clean and safe energy that is free from carbon dioxide emissions. However, imitating the solar energy process is a difficult task to achieve. Two young plasma physicists at Chalmers University of Technology have now taken us one step closer to a functional fusion reactor. Their model could lead to better methods for decelerating the runaway electrons, wh. more

ABB microgrid to power Aruba and support transition to renewable energy
Zurich, Switzerland (SPX) Jun 28, 2017 – ABB will provide an advanced microgrid to WEB Aruba N.V. the main power utility serving the Dutch Caribbean island of Aruba. ABB’s software, automation and control technologies will help WEB Aruba integrate solar and wind energy, forecast and plan better and optimize operations in real-time, while meeting Aruba’s growing demand for electricity. The island is 32 km long and 10 km across it. more

NRL Issued Patent for Solar Microbial Fuel Cell
Washington DC (SPX) Jun 23, 2017 – The U.S. Naval Research Laboratory (NRL), Center for Biomolecular Science and Engineering, has received a U.S. patent for a self-assembling, self-repairing, and self-contained microbial photoelectrochemical solar cell driven entirely by sunlight and microorganisms. A solar microbial fuel cell (SMFC) is a non-semiconductor-based system, which employs microorganisms to generate electric powe. more

Catalyst that mimics the z-scheme of photosynthesis
Lexington KY (SPX) Jun 26, 2017 – A team of chemists from the University of Kentucky and the Institute of Physics Research of Mar del Plata in Argentina has just reported a way to trigger a fundamental step in the mechanism of photosynthesis, providing a process with great potential for developing new technology to reduce carbon dioxide levels. Led by Marcelo Guzman, an associate professor of chemistry in the UK College of. more


American Solar Direct, Residential Solar Installer and Sales Firm, Is Bankrupt

When I spoke with Andrew Schneider, the CEO of American Solar Direct, earlier this year, he told me that despite a recent round of layoffs aimed at “low producers,” the situation was full speed ahead at the solar installer and sales company, which had its first cash-flow positive months in late 2016.

Last week, American Solar Direct filed for Chapter 7 bankruptcy in California Central Bankruptcy Court (first spotted by Triple Pundit). According to its bankruptcy filing. the company had less than $50,000 in assets and liabilities of between $10 million and $50 million.

In 2013, GTM Research named American Solar Direct (ASD) as a residential PV installer to watch. At the time, ASD was one of the few top 20 installers that had experienced consistent, positive quarter-over-quarter growth since it began installing PV systems in California in 2010. ASD raised its own project funds and received two rounds of equity investment, as well as $50 million to support its lease program from WGL Holdings, parent company of utility Washington Gas. A year ago, American Solar Direct won an undisclosed amount of funding from Dubai-based Adenium Capital.

But this is a tricky year for the U.S. solar industry, with fewer PV panels being deployed across the U.S. than in 2016. Residential solar is seeing flat or down business after years of runaway growth.

There is trouble in the residential market: Verengo, Sungevity and OneRoof are out of business. Tesla saved SolarCity with an acquisition. Enphase has had some difficult quarters. On the module front, we ve seen the bankruptcies of SolarWorld, Suniva and Beamreach. The same plunging prices that have enabled solar adoption also compress the margin of any player in the field.

“California is a big part of the issue. Not only is the state going to be transitioning to its second-generation of net metering and switching to time-of-use rates, but the state also had to cope with unprecedented rains in the first quarter of this year,” concluded GTM Head of Research Shayle Kann.

Source: GTM Research

Greentech Media

Eric Wesoff is Editor-at-Large at Greentech Media. Prior to joining GTM, Eric Wesoff founded Sage Marketing Partners in 2000 to provide sales and marketing-consulting services to venture-capital firms and their portfolio companies in the alternative energy and telecommunications sectors. Mr. Wesoff has become a well-known, respected authority and speaker in these fields.

His expertise covers solar power, fuel cells, biofuels and advanced batteries. His strengths are in market research and analysis, business development and due diligence for investors. He frequently consults for energy startups and Silicon Valley’s premier venture capitalists.

06.30.17 State Bulletin


Rental – Sales – Service

We provide Sales, Rental and Service to Contractors, Industrial Plants, and the Goverment.

If you are looking for: Portable and Stationary Air Compressors, Dewatering Pumps, Generators, Abrasive Blasting Equipment, Drilling Equipment, all terrain Extendable Boom Fork Trucks, Robotic Track Drills, or any of the other thousands of products we offer, you are in the right spot!

Browse Used Equipment


Walter S. Pratt Sons carry over two and half million dollars in Surface Track Drill Parts Hose, Fittings Couplings inventory to keep our customers up and running.

FOR SALE: Atlas Copco F9C-11 Drill

Used Equipment Sales

View all Rock Splitters

View all Fork Lifts

Brokk Demolition Rentals

Brokk has been the leading manufacturer of remote controlled demolition machines for over 20 years.
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Portable Air Compressors

View all Portable Air Compressors

View all Pumps

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Welcome to Pratt & Sons

Walter S. Pratt Sons, Inc. proudly represent over twenty major manufacturers, supplying equipment in the field of construction, manufacturing, chemical, petroleum and solar energy. We provide air compressors, rock drills, pumps, generators, all terrain fork lifts, abrasive cleaning equipment and much more.

Our rental equipment is delivered and used to all parts of New York State, as well as into the states of Massachusetts, Vermont, New Hampshire, Maine, Connecticut, Rhode Island, New Jersey and Pennsylvania.

Some of the Brands we represent / carry:

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A residential or commercial solar system may transform the way you live. The electric solar panels are strategically installed on your roof with racks, electrical wiring and an inverter. As a leader of commercial and residential solar systems, we guarantee speedy and quality service. We guarantee our customers that the residential and commercial solar systems will last at least 25 years, but it is reported that they perform for decades after. Can you imagine all of the electrical energy savings?

How Much Do You Save?

Most of our homeowners that use our top notch quality service in San diego, CA will receive an average return on their residential solar system investment of about 15 to 20 percent. But that’s not all. The residential solar system for Southern California residents adds value to your home without any property tax increases and homes appreciate approximately 15% with this addition. If you are in the business of selling homes, a home with a solar panel system is more likely to sell 20% faster than a home without solar panels.

Why Go Solar?

Solar power is the wave of the now, and the future is now. More Southern California residents and business owners are eco savvy and want to reflect a lifestyle that boasts of their eco friendly decisions. You save money, you help the environment and you get a return on your investment. There isn’t a reason not to go solar. We are the leading provider of commercial and residential solar power for San Diego, CA businesses and residents with an outstanding service record.

Featured Products

We only work with proven quality manufacturers you can trust!

SunSolar US is your one-stop-shop for all things solar. We custom design and engineer your system, management of any and all permits follow-through on all rebates and tax credits!

SunSolar makes it super easy and simple to go solar with our one-stop-shop and our full turn-key service, with our 24 hour monitoring for the life of the system – we handle it all.

Throughout all variables like panels pricing and local utilities rebates, solar power for your organization has never been more affordable. Contact SunSolar to discuss your energy needs!

The monthly system cost is LOWER than the electric bill. Our custom-design system considers your current usage so that your continued electrical use will fall to the lowest possible tier price!



The Massachusetts Department of Energy Resources (DOER) launched the first Massachusetts SREC program in January 2010. The program, now referred to as SREC-I, was created as a Massachusetts-specific solar carve-out of the New England REC market. SREC-I was originally established with a capacity limit of 400 MW, but this was reached in the spring of 2013. Pursuant to Emergency Regulations and revisions to the RPS Class I Regulation, the DOER continued to qualify projects under SREC-I through the first half of 2014, after the initial 400 MW limit was reached. On April 25, 2014, the DOER launched its SREC-II program to carry Massachusetts to its goal of installing 1,600 MW of solar capacity by 2020. Facilities qualified under either SREC-I or SREC-II are granted up to 10 years of SREC production under their respective program rules.

Massachusetts is currently in the process of designing and implementing its Next Solar Incentive Program. Additional information is provided below, and you can visit our blog for updates on this process.

Markets for MA Systems


Eligibility Period

Massachusetts SRECs are defined by eligibility for the DOER Solar Credit Clearinghouse Auction (SCCA). Solar facilities may produce SCCA-eligible SRECs for no more than 40 calendar quarters (10 years) of generation. Applications submitted after specific program deadlines may either truncate the eligibility period or delay the start of eligibility until after the date of interconnection. After a facility’s SREC eligibility period ends, the facility produces RECs eligible for the Massachusetts Class I market.

Meter Readings

Facilities must report generation from revenue grade meters to the Massachusetts Clean Energy Center (MassCEC) Production Tracking System (PTS). Facilities with a nameplate capacity greater than 10 kW must report automatically using a MassCEC-approved revenue grade meter online monitoring system, also known as a Data Acquisition System (DAS).

Solar Requirement

Instead of a predetermined increase in the number of SRECs required year over year (as is used in other SREC markets), the DOER utilizes a formula that takes into consideration how much capacity was installed in previous years and the results of the annual DOER-administered Solar Credit Clearinghouse Auction (SCCA) to determine the next year’s SREC compliance obligations.

The formula for determining the SREC requirement under both the SREC-I and SREC-II programs is as follows:

  • Total Compliance Obligation = Total Compliance Obligation (Current Year) + [Total Projected SRECs Generated (Current Year) – Actual SRECs Generated (Previous Year)] x 1.3 + Banked Volume (Previous Year) + Auction Volume (Previous Year)

“Auction Volume” refers to the number of SRECs deposited in each program’s Solar Credit Clearinghouse Auction Account. Also, when the program reaches its MW capacity limit (i.e. the “Sunset Period”), the components of the formula are adjusted as outlined in the regulation .

Solar Credit Clearinghouse Auction

The Massachusetts SREC programs are built around a price support mechanism called the Solar Credit Clearinghouse Auction (SCCA). In oversupplied years (when more SRECs are available than required), buyers are incentivized to purchase SRECs through the SCCA if they believe that the SCCA price is at or below the potential future price of the SRECs.

The SREC-I and SREC-II programs each have their own SCCA. The results of the SCCA for each of the programs are unrelated, but the rules governing each SCCA are similar. SRECs from the SREC-I program may only be deposited in an SREC-I SCCA, and SRECs from the SREC-II program may only be deposited in an SREC-II SCCA. The SCCA program rules do not require buyers to purchase SRECs through the SCCA, so there is no guarantee that SRECs deposited in the SCCA will be purchased. Buyers purchasing SRECs in the SCCA must pay predetermined purchase prices. Since the DOER takes a 5% administration fee for each sale, the value to a seller with SRECs in the SCCA is the predetermined SCCA price, less 5%.

SREC Issuance Schedule

MA SRECs are issued once per quarter with a three and a half month delay, based on the following schedule:

Power Production Period

Eligibility Start Date

A system’s eligibility start dates will be its date of interconnection, so long as the certification application is submitted prior to that quarter’s application deadline. Otherwise, eligibility will be based on the application date and its corresponding quarter. System owners should apply for certification around the date of interconnection to ensure they receive SREC eligibility for all generation produced following interconnection.


The Solar Alternative Compliance Payment (SACP) is the penalty price that electricity suppliers must pay per SREC if they fail to file the required number of SRECs by the end of each compliance period. The SACP price decreases over time in both the SREC-I and SREC-II programs.

SREC Useful Life

SRECs unsold by the end of each trading year (June 15th) must be deposited in the DOER Solar Credit Clearinghouse Auction (SCCA). If an SREC deposited in the SCCA is not purchased, then it is re-issued and must be sold within three years; however, re-issued SRECs may not be deposited into future Solar Credit Clearinghouse Auctions, effectively stripping these SRECs of SCCA eligibility. The risk of an unsuccessful SCCA sale and the time value of money are two reasons why sellers will sell SRECs below the SCCA price in oversupplied years.

SREC-II Market Sectors

The SREC-II program divides project eligibility into market sectors. With the exception of the Managed Growth category, there are no limits on how much capacity can qualify within each market sector. A project’s market sector eligibility determines how many SRECs it receives for each megawatt hour it produces. This is meant to allow for a diverse portfolio of projects to be developed in the Commonwealth. For example, a residential project or large carport will receive 10 SRECs for every 10 megawatt hours it produces, whereas a project in the Managed Growth category will only receive 7 SRECs for every 10 megawatt hours it produces.

The table below summarizes the original SREC-II factors. For the reduced SREC-II factors, see below.

Generation Unit Type


If you would like to visit our online shop, please visit www.spacekids.co.uk

What is the solar system?

The Solar System is made up of the Sun and the celestial objects that are bound to it by its gravity: the eight planets and five dwarf planets, their 173 known moons, and billions of small bodies, such as asteroids, icy kuiper belt objects, comets, meteoroids, and interplanetary dust.

Although the farthest planet is over four billion kilometers away from the earth, all eight planets can be seen in the night sky, using a telescope or binoculars – as long as you know where to look!

Mercury is the closest planet to the Sun, and the smallest planet of the solar system. Mercury has been visited by two unmanned NASA space probes, Mariner 10 and Messenger. The unmanned Messenger proble was launched by NASA in 2004 and will begin to orbit Mercury in 2011 after several flybys.

The picture on the left is a picture of Mercury that was taken by Messenger in 2008, and transmitted back to earth for scientists to study.

Mercury is 57,900,000 km away from the sun.

Venus is a very similar size to the Earth, and like Earth, is made of a thick silicate mantle around an iron core. It has a substantial atmosphere and evidence of internal geological activity. Venus is probably the planet that is most similar to Earth in many ways, although it is much drier than Earth and its atmosphere is ninety times as dense.

It is the hottest planet in the solar system, with surface temperatures over 400 �C. This is thought to be because of the amount of greenhouse gases in its atmosphere.

Venus is named after the Greek Goddess of Love and Beauty.

Venus is 108,000,000 km away from the sun.

Earth is the largest and densest of the four inner planets, the only one known to have current geological activity, like earthquakes and volcanoes. It is the only planet known to have life. Its liquid hydrosphere (oceans and seas) is unique among the terrestrial planets.

Earth’s atmosphere is radically different from those of the other planets, having been altered by the presence of life so it now contains 21% oxygen – which humans need to be able to breathe!

It has one natural satellite, the Moon, which is the only large satellite of a terrestrial planet in the Solar System.

The Earth is 150,000,000 km from the sun.

Mars – the red planet

Mars is smaller than both Earth and Venus. The first spacecraft to visit Mars was Mariner 4 in 1965. Several others followed, most recently in 2008, when Phoenix landed in the northern plains to search for water. Three Mars orbiters (Mars Reconnaissance Orbiter, Mars Odyssey, and Mars Express) are also currently at work studying Mars.

NASA has landed several unmanned robotic probes on Mars, most recently two remote controlled car-like robots called Mars Rovers. These probes allow NASA scientists to explore the planet, take pictures, analyse soil and conduct experiments. The picture on the left is of one of the Mars Rovers on the surface of Mars.

Mars is named after the Greek God of War. It is sometimes also called the red planet, because most of its surface is covered in reddish rocks, dust and soil.

Mars is 228,000,000 km away from the sun.

Jupiter is the biggest planet in the solar system. It is 2.5 times the mass of all the other planets of the solar system put together! It is a gas giant, rather than a terrestrial planet, and is made largely of hydrogen and helium.

The large spot on Jupiter is actually a storm that has been raging for several hundred years!

Jupiter was first visited by Pioneer 10 in 1973 and later by Pioneer 11, Voyager 1, Voyager 2 and Ulysses. The unmanned spacecraft Galileo orbited Jupiter for eight years. In 2003 Galileo was crashed deliberately into Jupiter, to stop it from impacting on Europa, one of Jupiters moons that scientists believe may harbour some basic form of life.

Jupiter is 779,000,000 km away from the sun.

Saturn – the ringed planet

Saturn is distinguished by its extensive ring system, but otherwise has several similarities to Jupiter. They are both gas giants. Saturn has at least sixty known satellites; two of which, Titan and Enceladus, show signs of geological activity, though they are largely made of ice.

Saturn was first visited by NASA’s Pioneer 11 in 1979 and later by Voyager 1 and Voyager 2. Cassini (a joint NASA / ESA project) arrived on July 1, 2004 and is still in orbit now.

Saturn’s rings are extraordinarily thin: though they’re 250,000 km or more in diameter they’re less than one kilometre thick. The ring particles seem to be composed primarily of water and ice, but they may also include rocky particles with icy coatings.

Saturn is 1,430,000,000 km away from the sun.

Uranus is the lightest of the outer planets, a type of gas giant that some scientists call an ice giant. As you can imagine from this nickname its atmosphere is very cold – the coldest in the solar system. The wind on Uranus can blow at over 500 miles per hour!

It was discovered by William Herschel, a famous astronomer, while systematically searching the sky with his telescope on March 13, 1781.

Uranus has been visited by only one spacecraft, Voyager 2 on Jan 24 1986. The picture on the left is an enhanced image of Uranus that was beamed back to Earth by Voyager 2.

Uranus is 2,880,000,000 km away from the sun.

Neptune is the outermost planet of the solar system. It is slightly smaller than Uranus. Neptune has also been visited by only one spacecraft, Voyager 2, on Aug 25 1989.

Neptune has a mark on it that looks very similar to Jupiter’s great spot. Just like Jupiter, this is caused by violent storms.

The weather is very extreme on Neptune – the wind on Neptune is the strongest on any planet, and blows at 1,300 miles per hour – as fast as a jet fighter plane.

Neptune is 4,500,000,000 km away from the sun.

Pluto and the other dwarf planets

Pluto used to be classed as a planet of the solar system, but is now considered to be a dwarf planet, and a part of the Kuiper belt. The Kuiper belt is a vast collection of dwarf planets, asteroids, rocks, ice and dust that circle the sun, that extends for millions of miles beyond Neptune, on the outskirts of the solar system.

As of mid-2008, five smaller objects are classified as dwarf planets, all but the first of which orbit beyond Neptune. These are:

  • Ceres (415,000,000 km from the sun)
  • Pluto (5,906,000,000 km, from the sun, formerly classified as the ninth planet)
  • Haumea (6,450,000,000 km from the sun)
  • Makemake (6,850,000,000 km from the sun)
  • Eris (10,100,000,000 km from the sun)

    But what about the Moon?

    The Moon is not a planet at all. It is one of more than three hundred smaller celestial bodies that circle the planets of the solar system.

    The Moon was the first such celestial body that people knew about – it was always visible from earth! After 1665, when astronomers observed moons around other planets, the word moon started to be used as a collective term for them all.

    Scientists know more about the Moon than any other planet or celestial body in the solar system, because it is the only other world that humans have ever visited. Between 1969 and 1972, twelve astronauts visited the Moon. exploring, experimenting and collecting rocks and soil, to help us learn more.

    The Moon has a gravitational pull on the Earth, and it this that causes the tides of the oceans. The Moon’s latin name is “Luna”, and it is around 240,000 miles away from the Earth.

    So how big is the solar system?

    NASA launched an unmanned space probe in 1977, called Voyager 1. Its job was to fly away from Earth, through the solar system, visiting planets on the way, sending back pictures and information for NASA scientists to study.

    Voyager has sent back pictures of Jupiter and Saturn, and is still travelling away from earth. It is now the farthest travelled space craft ever launched.

    Voyager 1 is fast – it covers around 17 kilometres every second. Despite its incredible speed, it did not pass the last planet of the solar system until 1990.By early 2009, Voyager 1 was over ten billion miles away from the sun!

    Find out even more about the solar system on the BBC’s interactive pages here!

    If you like all things related to space, why not visit the Spacekids online shop which stocks astronaut food, space related toys, dressing up, and other cool stuff at www.spacekids.co.uk

    visit our learn webpages for more articles about space exploration at www.spacekids.co.uk/learn