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

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In galaxy collision, how does the colliding dark matter interact?

15 upvotes

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How do planetary scientists account for how the Galilean moons of Jupiter (Io, Europa, Ganymede & Callisto) turned out so differently from each other?

11 upvotes

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Could we tell if our solar system was on a trajectory leaving the Milky Way galaxy?

7 upvotes

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Does the surface of our planet have areas that are more susceptible to meteor and comet impacts? (i.e. do certain regions get hit disproportionately compared to others? and if so, why?) Alternatively, do all regions have an equal chance of being struck?

3 upvotes

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Could there be galaxies as close (or closer) than Andromeda that are eclipsed by the Milky Way's galactic disk, and therefore impossible to detect?

1 upvotes

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How do we sense and perceive light when our eye lids are closed?

1 upvotes

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When a large comet or meteor collides with the earth and ejects debris into space, about how fast would that debris travel through the cosmos?

1 upvotes

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How do astrophysicists measure the density of particles in the interstellar medium and the intergalactic medium?

1 upvotes

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Besides mass, what is Jupiter lacking for it to be considered a star? With the discovery of the smallest star is the distinction between star and planet so cut and dry?

0 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
In galaxy collision, how does the colliding dark matter interact?	15
How do planetary scientists account for how the Galilean moons of Jupiter (Io, Europa, Ganymede & Callisto) turned out so differently from each other?	11
Could we tell if our solar system was on a trajectory leaving the Milky Way galaxy?	7
Does the surface of our planet have areas that are more susceptible to meteor and comet impacts? (i.e. do certain regions get hit disproportionately compared to others? and if so, why?) Alternatively, do all regions have an equal chance of being struck?	3
Could there be galaxies as close (or closer) than Andromeda that are eclipsed by the Milky Way's galactic disk, and therefore impossible to detect?	1
How do we sense and perceive light when our eye lids are closed?	1
When a large comet or meteor collides with the earth and ejects debris into space, about how fast would that debris travel through the cosmos?	1
How do astrophysicists measure the density of particles in the interstellar medium and the intergalactic medium?	1
Besides mass, what is Jupiter lacking for it to be considered a star? With the discovery of the smallest star is the distinction between star and planet so cut and dry?	0