/u/off-and-on's posts in /r/askscience

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Which planet in our solar system is the oldest/youngest?

219 upvotes

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If Jupiter was to just disappear suddenly and the asteroid belt would start accreting into a new planet, how long would it take for the accretion to finish?

11 upvotes

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When are you affected by gravity from a rotating toroidal habitat module?

3 upvotes

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Do phages work on viruses, or do viruses have their own proverbial panacea?

3 upvotes

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How far are our exoplanet detecting telescopes effective?

1 upvotes

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Let's say the Chimpanzees developed human intelligence. What would happen?

1 upvotes

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How come all terrestrial planets are located in the center of the solar system, and all non-solid planets are located on the outer end?

1 upvotes

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Through selective breeding, could we theoretically breed a breed of cats/dogs which are sentient?

1 upvotes

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Let's say you're in a spaceship going at 100% the speed of light. You walk forwards in the direction the ship is travelling in. To an outside observer you would be travelling faster than light. Is this possible? Or is there something preventing you from moving at the speed of light?

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How can we know that stuff like black holes exists and all the properties of such things, even before we've observed them?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Which planet in our solar system is the oldest/youngest?	219
If Jupiter was to just disappear suddenly and the asteroid belt would start accreting into a new planet, how long would it take for the accretion to finish?	11
When are you affected by gravity from a rotating toroidal habitat module?	3
Do phages work on viruses, or do viruses have their own proverbial panacea?	3
How far are our exoplanet detecting telescopes effective?	1
Let's say the Chimpanzees developed human intelligence. What would happen?	1
How come all terrestrial planets are located in the center of the solar system, and all non-solid planets are located on the outer end?	1
Through selective breeding, could we theoretically breed a breed of cats/dogs which are sentient?	1
Let's say you're in a spaceship going at 100% the speed of light. You walk forwards in the direction the ship is travelling in. To an outside observer you would be travelling faster than light. Is this possible? Or is there something preventing you from moving at the speed of light?	1
How can we know that stuff like black holes exists and all the properties of such things, even before we've observed them?	1