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

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[Astronomy] Are we only able to detect planets in a distant solar system when the angle of the solar system is aligned from our perspective like a frisbee? If so, what percent of stars does that account for?

21 upvotes

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[Planetary Sci]

1 upvotes

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Are we only able to detect when a star has a planet when the angle of that solar system is pointed directly at us like a frisbee? If so, what percent of stars does that account for?

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When we observe a star, say, 100 light years away, which is moving much faster because it is near the super massive black hole at the center of the galaxy, we are seeing them 100 years in our past, but when on their past are we observing?

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Why, exactly, can't light escape a black hole? Is there a way to visualize this so it's easy to understand?

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[Astronomy] Why can't light escape a black hole?

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[Planetary Sci.] Based on fossil evidence, is Pangea any more plausible than Expanding Earth?

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[Earth History] Based on fossil evidence, is Pangea any more plausible than Expanding Earth?

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[Oceanography] How exactly do we determine a Dolphin's intelligence? Have dolphins been studied under such conditions to determine if they're capable of understanding or learning things as well as Apes?

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Based on fossil evidence, is 'Pangea' any more plausible than 'Expanding Earth'?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
[Astronomy] Are we only able to detect planets in a distant solar system when the angle of the solar system is aligned from our perspective like a frisbee? If so, what percent of stars does that account for?	21
[Planetary Sci]	1
Are we only able to detect when a star has a planet when the angle of that solar system is pointed directly at us like a frisbee? If so, what percent of stars does that account for?	1
When we observe a star, say, 100 light years away, which is moving much faster because it is near the super massive black hole at the center of the galaxy, we are seeing them 100 years in our past, but when on their past are we observing?	1
Why, exactly, can't light escape a black hole? Is there a way to visualize this so it's easy to understand?	1
[Astronomy] Why can't light escape a black hole?	1
[Planetary Sci.] Based on fossil evidence, is Pangea any more plausible than Expanding Earth?	1
[Earth History] Based on fossil evidence, is Pangea any more plausible than Expanding Earth?	1
[Oceanography] How exactly do we determine a Dolphin's intelligence? Have dolphins been studied under such conditions to determine if they're capable of understanding or learning things as well as Apes?	1
Based on fossil evidence, is 'Pangea' any more plausible than 'Expanding Earth'?	1