Articles

Articles

  • What is the Distance to the Moon?

    The Moon orbits around the Earth once every 27 days. An orbit is when something goes all the way around something else and returns to its starting position: the Earth orbits the Sun, and the Moon orbits the Earth. The Moon’s orbit is not circular - instead, it is an elliptical orbit. An ellipse is like an oval shape, or a stretched out circle. An...
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  • How Many Moons Does Mars Have?

    Mars is the fourth planet from the sun. Mars has two Moons, Phobos and Deimos. They were both discovered in 1877, by Asaph Hall at the Naval Observatory in Washington DC. Phobos is the larger one of Mars’ moons, and it orbits...
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  • How Many Moons Does Jupiter Have?

    Jupiter is the fifth planet from the sun, and has the most moons out of all the planets in our solar system. Some of the planets (Mercury and Venus) have no moons, while Jupiter has a whopping 63! These are just the known moons - so there’s always a chance that more will be discovered!
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  • How Many Moons Does Neptune Have?

    Neptune is the eighth planet from the sun, and was discovered in 1846. Neptune takes 164 years to orbit around the Sun once. Neptune is the furthest away planet in our solar system, and has 14 moons. Neptune’s largest moon is...
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  • Why is Pluto No Longer a Planet?

    Pluto used to be known as the smallest planet in our solar system, and the furthest planet from the sun. Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer. Pluto is over 5.8 billion km (3.6 billion miles) away, and it takes Pluto 248 years to orbit the sun. While...
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  • How Hot is the Sun?

    The sun is in the centre of our solar system, and is a large sphere of gas that produces energy and light. The sun is extremely hot - but the exact temperature of the sun varies a lot in many different ways, and depends on which part of the sun you are looking at.
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  • How Many Stars are in the Solar System?

    In our solar system, there is only one star that we know of - the sun! Our solar system is very unique in that is only has one star. Most other solar systems have at least two stars. These are called binary systems. Some solar systems with as many as six stars have been observed by astronomers.
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  • How Long is a Year on Uranus?

    1 year on Earth is the length of time that it takes Earth to orbit the sun. Earth’s orbit takes just over 365 days (the ‘extra’ bit on top of the 365 days is why we have a leap year every four years, where an extra day is added onto February).
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  • How Long Does it Take to Get to Mars?

    Mars is the fourth planet from the sun, and is easily visible in the night sky - even without a telescope! When looking at the sky, you may see the stars twinkling. You can look for the difference between a star and a planet by keeping an eye out for ‘stars’ that don’t twinkle, or ones that look like flat circular discs in the sky. Mars has...
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  • How Hot is Venus?

    Venus is the second planet from the sun, but it is the hottest planet in the solar system! That’s right - it’s hotter than Mercury! This is because Venus has a thick cloud layer in its atmosphere, made up of carbon dioxide.
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