What’s the atmosphere? Weather science
Earth's atmosphere: Did the Earth look like this right after it cooled down? What is the atmosphere? The atmosphere is the air that is wrapped all around a planet. Read more [...]
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08, 2017
What is Time? – Time and space in Physics
Time and space: a sundial from Ukraine (ca. 1300 BC) - one of the two oldest sundials in the world Are time and space the same thing? Nobody knows what [...]
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08, 2017
Venus – Planets – Astronomy – Space science
This is what the planet Venus looks like from space. Venus is the second planet away from our Sun - Mercury is closer to the Sun, and then the Earth is a little farther from the Sun. [...]
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08, 2017
Uranus – Planets – Astronomy – Space science
Uranus, the second to last planet out from the Sun Uranus is between Saturn and Neptune, so it's the next to the last planet away from our Sun. It takes Uranus 84 years to [...]
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08, 2017
Supernova – Space – Astronomy
Supernova from space (thanks to NASA and the Hubble Telescope) What is a supernova? Supernovas are exploding stars. Red giant stars explode when they have used up their hydrogen and helium fuel, and converted most of their atoms to iron [...]
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08, 2017
What’s the sun made of? – Astronomy – Science
The sun from space The Sun is a star, just like billions of other stars in the universe. Our Sun probably formed a little more than four and a half billion years [...]
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08, 2017
What are stars made of? Astronomy, physics
What are stars made of? This is just one of the stars: the sun from space The first stars The earliest stars probably formed only a few hundred thousand years [...]
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08, 2017
Saturn – Planets – Astronomy
Saturn, as seen from space After Jupiter, Saturn is the next farthest planet out from our Sun. In some ways, Saturn is a lot like Jupiter - it's very cold, and it's mostly made [...]
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08, 2017
What are planets? Astronomy – Space science
What are planets? The planet Venus from space Before there were planets For several hundred million years after the Big Bang, there were no planets, only stars. Planets couldn't form until the [...]
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08, 2017
Neptune – Planets – Astronomy – Physics
Neptune from space Neptune is the farthest planet from our Sun. Neptune is the only planet that is so far away that you can't see it without a telescope. Neptune (NEPP-toon) is [...]
