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

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How come we are able to detect planets thousands (millions?) of light years away from us, but we have yet to determine with 100% certainty whether or not there is a ninth planet in our solar system?

754 upvotes

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How come NASA's Opportunity rover lasted as long as it did?

4 upvotes

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What prevents us from accidently biting on our tongue? Why does this prevention not always work?

1 upvotes

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Is there a difference in the shape of the brain across different species?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How come we are able to detect planets thousands (millions?) of light years away from us, but we have yet to determine with 100% certainty whether or not there is a ninth planet in our solar system?	754
How come NASA's Opportunity rover lasted as long as it did?	4
What prevents us from accidently biting on our tongue? Why does this prevention not always work?	1
Is there a difference in the shape of the brain across different species?	1