/r/askscience

Year:

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Can a planet have more than 4 seasons?

8086 upvotes • zedudedaniel

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Why do we use CO2 for sparkling drinks rather than any other gas?

8074 upvotes • buswank3r

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What caused the growing whining sound when old propeller planes went into a nose dive?

8069 upvotes • osirisfrost42

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Do antibiotics kill all healthy gut bacteria and if so how does the body return to normal after treatment?

8066 upvotes • Verittan

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Why is it matter in the Sun's core can undergo fusion at 15 million degrees but our fusion reactors need to be 100+ million degrees?

8058 upvotes • Musical_Tanks

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Greenland ice melt reporting has me worried, what are ramifications of this year's melt?

8056 upvotes • PHealthy

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Can bacteria, viruses, etc. get diseases just like humans or plants?

8056 upvotes • [deleted]

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A 5 foot section of railroad rail does not seem very flexible but a 200 foot section appears to be as flexible as a noodle with bends under a foot. How does longer length make it more flexible?

8053 upvotes • inkseep1

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What percentage of a human fart is produced by bacteria, and what percentage is actually produced by you ?

8045 upvotes • flabby_kat

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Might be very stupid so sorry in advance. But NASA says that Perseverance did about 7 months to travel to Mars and travelled about 480 million kilometres. But they say it travelled at a speed of about 39600 Km/h. And unless I made a dumb mistake that doesn't add up. Am I missing something?

8033 upvotes • Tiny_Erik

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Can a planet have more than 4 seasons?	8086	zedudedaniel
Why do we use CO2 for sparkling drinks rather than any other gas?	8074	buswank3r
What caused the growing whining sound when old propeller planes went into a nose dive?	8069	osirisfrost42
Do antibiotics kill all healthy gut bacteria and if so how does the body return to normal after treatment?	8066	Verittan
Why is it matter in the Sun's core can undergo fusion at 15 million degrees but our fusion reactors need to be 100+ million degrees?	8058	Musical_Tanks
Greenland ice melt reporting has me worried, what are ramifications of this year's melt?	8056	PHealthy
Can bacteria, viruses, etc. get diseases just like humans or plants?	8056	[deleted]
A 5 foot section of railroad rail does not seem very flexible but a 200 foot section appears to be as flexible as a noodle with bends under a foot. How does longer length make it more flexible?	8053	inkseep1
What percentage of a human fart is produced by bacteria, and what percentage is actually produced by you ?	8045	flabby_kat
Might be very stupid so sorry in advance. But NASA says that Perseverance did about 7 months to travel to Mars and travelled about 480 million kilometres. But they say it travelled at a speed of about 39600 Km/h. And unless I made a dumb mistake that doesn't add up. Am I missing something?	8033	Tiny_Erik