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

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[Astronomy] Do we know enough about the heavy metal output of supernovae to speculate as to what the mass of the first generation of stars was? What do we know about the first stars?

1546 upvotes

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[astronomy] How is the Oort cloud further out than the heliopause, if the heliopause marks the end of the Sun's influence in the Milky Way?

5 upvotes

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[Serious] How much more radiation do you think humans could be exposed to on a yearly basis without causing a crisis? How much less could there be without having a negative effect on the rate of evolution in non-niche environments?

1 upvotes

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Why is Jupiter so radioactive?

1 upvotes

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Why do we say that space bends when to explain gravitational lensing, instead of saying light changes speed?

1 upvotes

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So we have 50% of the same DNA as a banana and 99% of the same DNA as a chimpanzee. What does it mean that Craig Cobb is genetically 14% Sub-Saharan African and how much of a fraction of our DNA is determined by ethnicity?

1 upvotes

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How much more radiation do you think humans could be exposed to on a yearly basis without causing a crisis? How much less could there be without having a negative effect on the rate of evolution in non-niche environments?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
[Astronomy] Do we know enough about the heavy metal output of supernovae to speculate as to what the mass of the first generation of stars was? What do we know about the first stars?	1546
[astronomy] How is the Oort cloud further out than the heliopause, if the heliopause marks the end of the Sun's influence in the Milky Way?	5
[Serious] How much more radiation do you think humans could be exposed to on a yearly basis without causing a crisis? How much less could there be without having a negative effect on the rate of evolution in non-niche environments?	1
Why is Jupiter so radioactive?	1
Why do we say that space bends when to explain gravitational lensing, instead of saying light changes speed?	1
So we have 50% of the same DNA as a banana and 99% of the same DNA as a chimpanzee. What does it mean that Craig Cobb is genetically 14% Sub-Saharan African and how much of a fraction of our DNA is determined by ethnicity?	1
How much more radiation do you think humans could be exposed to on a yearly basis without causing a crisis? How much less could there be without having a negative effect on the rate of evolution in non-niche environments?	1