/u/UserNamesCantBeTooLo's posts in /r/askscience

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Scientists think the Earth had 2 periods of time when it was almost completely covered in ice. They only lasted a few million years. Do we have any way of knowing if Europa or Enceladus might be in similar temporary freezes? Or is theirs a clearly permanent state?

7802 upvotes

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Is it true that the K-T boundary can be found almost everywhere on Earth?

373 upvotes

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Is there anything in the solar system that orbits the Sun in the opposite direction from Earth's direction of orbit?

183 upvotes

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A particle of light is called a photon. What's a particle of radio called?

18 upvotes

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Does the cloud of dust obscuring the center of our galaxy protect us from harmful radiation?

3 upvotes

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Would being able to divide by zero have any use in math? If you try 7/0=b, can we invent a quantity for b that's the solution to 7=b*0? The same way we invented a quantity i that's the solution to sqrt(-1)?

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There's tons of microorganisms surprisingly deep into the Earth's crust. Could life have begun underground instead of a warm little pond? Has there been any serious research into that question?

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Meteors typically burn up in the atmosphere at 20 km/s. The Sun orbits the galactic center at 225 km/s. Why do things found in space move so fast?

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There's tons of microorganisms surprisingly deep into the Earth's crust. 70% of Earth's bacteria live underground, extending at least 5 km down. Could life have BEGUN underground instead of a "warm little pond"? Has there been any serious research into that question?

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Should the Oort Cloud be considered the edge of the solar system? Do other stars have Oort Clouds?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Scientists think the Earth had 2 periods of time when it was almost completely covered in ice. They only lasted a few million years. Do we have any way of knowing if Europa or Enceladus might be in similar temporary freezes? Or is theirs a clearly permanent state?	7802
Is it true that the K-T boundary can be found almost everywhere on Earth?	373
Is there anything in the solar system that orbits the Sun in the opposite direction from Earth's direction of orbit?	183
A particle of light is called a photon. What's a particle of radio called?	18
Does the cloud of dust obscuring the center of our galaxy protect us from harmful radiation?	3
Would being able to divide by zero have any use in math? If you try 7/0=b, can we invent a quantity for b that's the solution to 7=b*0? The same way we invented a quantity i that's the solution to sqrt(-1)?	1
There's tons of microorganisms surprisingly deep into the Earth's crust. Could life have begun underground instead of a warm little pond? Has there been any serious research into that question?	1
Meteors typically burn up in the atmosphere at 20 km/s. The Sun orbits the galactic center at 225 km/s. Why do things found in space move so fast?	1
There's tons of microorganisms surprisingly deep into the Earth's crust. 70% of Earth's bacteria live underground, extending at least 5 km down. Could life have BEGUN underground instead of a "warm little pond"? Has there been any serious research into that question?	1
Should the Oort Cloud be considered the edge of the solar system? Do other stars have Oort Clouds?	1