/u/sealife1366's posts in /r/askscience

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How would the world be different if gold and silver were highly magnetic?

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If we pointed a telescope at a mirror 50 light years away, could we see ourselves 100 years in the past?

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Why can't we see the surface of Mars, from Earth, with a telescope?

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If there was a giant mirror floating in space 50 light years away, pointing back at Earth, could you hypothetically see Earth from a telescope 100 years in the past?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How would the world be different if gold and silver were highly magnetic?	1
If we pointed a telescope at a mirror 50 light years away, could we see ourselves 100 years in the past?	1
Why can't we see the surface of Mars, from Earth, with a telescope?	1
If there was a giant mirror floating in space 50 light years away, pointing back at Earth, could you hypothetically see Earth from a telescope 100 years in the past?	1