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

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Is there such a thing as mitochondrial "cancer?" I.e., are there any diseases resulting from known or suspected errors in mitochondrial DNA that disrupt the mechanism of mitochondrial replication?

1395 upvotes

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Polaris, the North Star, is .7 degrees off the Earth's axis of rotation (at present). Is there another star known to be spot on, but invisible to the naked eye?

151 upvotes

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Does the act of questioning have an fMRI signature, and has this signature been observed in other animals?

78 upvotes

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Are there any weather systems, such as arctic cold fronts, that move from west to east all the way around the world? Could a cold front that arrives today be the same front (evolved, obviously) that came through 2-3 weeks prior ?

67 upvotes

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If a person is right-handed, does such dominance include all voluntary muscles? For example, are the muscles in the larynx also somewhat right-dominant?

58 upvotes

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Are there any genes or junk segments of mtDNA that suggest the type of bacteria that was originally incorporated to form the first eukaryote?

31 upvotes

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When Siri transmits speech from a phone to a data center for speech recognition, is that speech encoded the same as a mobile phone call, or is it encoded in higher fidelity?

14 upvotes

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Temperature is related to average KE. Interstellar space is said to have a temperature of 3 degrees K. Does that mean interstellar particles are barely moving?

12 upvotes

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Do terrestrial plants ever poison or otherwise attack other plants?

12 upvotes

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Why do planets and moons tend to have orbits within a single plane, whereas some galaxies are relatively globular?

11 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there such a thing as mitochondrial "cancer?" I.e., are there any diseases resulting from known or suspected errors in mitochondrial DNA that disrupt the mechanism of mitochondrial replication?	1395
Polaris, the North Star, is .7 degrees off the Earth's axis of rotation (at present). Is there another star known to be spot on, but invisible to the naked eye?	151
Does the act of questioning have an fMRI signature, and has this signature been observed in other animals?	78
Are there any weather systems, such as arctic cold fronts, that move from west to east all the way around the world? Could a cold front that arrives today be the same front (evolved, obviously) that came through 2-3 weeks prior ?	67
If a person is right-handed, does such dominance include all voluntary muscles? For example, are the muscles in the larynx also somewhat right-dominant?	58
Are there any genes or junk segments of mtDNA that suggest the type of bacteria that was originally incorporated to form the first eukaryote?	31
When Siri transmits speech from a phone to a data center for speech recognition, is that speech encoded the same as a mobile phone call, or is it encoded in higher fidelity?	14
Temperature is related to average KE. Interstellar space is said to have a temperature of 3 degrees K. Does that mean interstellar particles are barely moving?	12
Do terrestrial plants ever poison or otherwise attack other plants?	12
Why do planets and moons tend to have orbits within a single plane, whereas some galaxies are relatively globular?	11