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

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For light to qualify as a laser does it have to be emitted in a beam or does it just have to be of one wavelength?

2775 upvotes

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Why are brown dwarfs not just considered very large planets?

3 upvotes

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Why don't we look for life on Venus?

2 upvotes

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When did evolution invent sleep?

1 upvotes

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Why were uranium and plutonium used in the first atomic bombs and not some other heavy element?

1 upvotes

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What causes the blue cones in the fire beneath the Space Shuttles engines?

1 upvotes

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How big does a moon have to be relative to its planet for the two to be considered a binary planetary system?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
For light to qualify as a laser does it have to be emitted in a beam or does it just have to be of one wavelength?	2775
Why are brown dwarfs not just considered very large planets?	3
Why don't we look for life on Venus?	2
When did evolution invent sleep?	1
Why were uranium and plutonium used in the first atomic bombs and not some other heavy element?	1
What causes the blue cones in the fire beneath the Space Shuttles engines?	1
How big does a moon have to be relative to its planet for the two to be considered a binary planetary system?	1