/u/RazgrizS57's posts in /r/askscience

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Does the expansion of space also increase the distance between an atom's nucleus and its electron cloud?

22 upvotes

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How large does an object in space need to be in order to gravitationally bind an average human to its surface?

15 upvotes

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Sound waves don't travel in a vacuum. But if two astronauts touched their space helmets together, would they be able to communicate?

5 upvotes

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If black holes can form because of the Schwartzchild radius, then why did the early universe at all expand?

4 upvotes

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Can two stars merge?

2 upvotes

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Suppose I were to throw a bomb which detonates upon impact with a target. Does the momentum of the bomb itself add anything to the energy the explosion imparts on the target?

1 upvotes

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What does our galaxy do to protect us from intergalactic space? Could our solar system survive if it was ejected from the galaxy?

1 upvotes

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Does the Schwarzschild radius of the observable universe change with expansion?

1 upvotes

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Why did the universe not directly collapse into a black hole shortly after the Big Bang?

1 upvotes

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What's the difference between animal horns and spines?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Does the expansion of space also increase the distance between an atom's nucleus and its electron cloud?	22
How large does an object in space need to be in order to gravitationally bind an average human to its surface?	15
Sound waves don't travel in a vacuum. But if two astronauts touched their space helmets together, would they be able to communicate?	5
If black holes can form because of the Schwartzchild radius, then why did the early universe at all expand?	4
Can two stars merge?	2
Suppose I were to throw a bomb which detonates upon impact with a target. Does the momentum of the bomb itself add anything to the energy the explosion imparts on the target?	1
What does our galaxy do to protect us from intergalactic space? Could our solar system survive if it was ejected from the galaxy?	1
Does the Schwarzschild radius of the observable universe change with expansion?	1
Why did the universe not directly collapse into a black hole shortly after the Big Bang?	1
What's the difference between animal horns and spines?	1