Science, asked by Anonymous, 1 month ago

Hi guys can anyone answer my question pls!!!!!!!!
Does sound travel faster in space?

Does the influence of gravity extend out forever?

Galaxies look stationary, so why do scientists say that they rotate?

Have aliens ever visited earth?

Answers

Answered by shrawani45
3
  1. No,space is vacume and sound cannot travel in vacume.
  2. No. As you get farther away from a gravitational body such as the sun or the earth (i.e. as your distance r increases), its gravitational effect on you weakens but never goes completely away; at least according to Newton's law of gravity. 
  3. Galaxies do indeed rotate. This rotation is what gives typical galaxies a flattened round shape, a bit like how throwing and spinning pizza dough makes it round and flat.
  4. No one is sure about it,but there are many incidents that prove that aliens visited earth.

well I am also interested in these alien and space type of things...for information about aliens...you can watch video on You/Tube of Facttechz regarding aliens

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