Facts on space and universe (002)

 What's our nearest neighboring spiral galaxy?

That would be Andromeda, a spiral galaxy like the Milky Way Astronomers believe it contains as many as a trillion stars. At 2.5 million light-years away. Andromeda is the farthest thing we can see with the naked eye, but it's getting closer all the time. Someday, the Milky Way and Andromeda galaxies will collide, sharing their star dust and spawning new stars. It's doubtful any humans will see this cosmic collision, which won't happen until four billion years in the future.

How far is Earth from the center of the Milky Way?

About 27,000 light years (A light year is a unit of astronomical measurement for distances between stellar objectscone light-year is how far light travels in a year)