Search Results | solar system
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Why Does Earth Spin?
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Every 24 hours, Earth makes a full rotation on its axis. But why does Earth spin in the first place?
How Many Moons Does Jupiter Have? We're Losing Count
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Scientists are continually discovering more moons orbiting the outer planets, particularly Saturn and Jupiter. Just how many moons does Jupiter have?
How many solar cells would I need in order to provide all of the electricity that my house needs?
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How many solar cells would I need in order to provide all of the electricity that my house needs? Learn more about solar cells and how they work.
Why Is Pluto No Longer Considered a Planet?
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On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked Pluto's planetary status.
Uranus: The Ice Giant on a Tilted Axis
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Uranus is the seventh planet from the sun and sits on an axial plane tilted at a jaw-dropping 97.7-degree angle. And yes, Uranus does actually stink.
Gliese 581c: The First 'Earth-like' Planet Found
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Gliese 581c was one of the first "Earth-like" planets found, back in 2007. It generated a lot of excitement then but what about now?
How Asteroids Work
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What exactly are asteroids? And what was the NEAR Shoemaker mission about?
The Truth Behind the Rogue Planet Nibiru
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The idea of planet Nibiru, sometimes dubbed Planet X, has captivated doomsday prophets and conspiracy theorists for decades.
Pluto: Is It a Planet After All?
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Back in 2006, the International Astronomical Union decided to demote Pluto to the status of a dwarf planet. A historical study challenges that designation.
Scientists Confirm Uranus Stinks
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Astronomers have discovered the chemical signature of hydrogen sulfide, a foul-smelling compound, in Uranus' clouds. Learn more at HowStuffWorks.