Before our minds start to reel at these scales, let's return to the Andromeda Galaxy and examine it from our vantage point on the dust-grain planet we call Earth. The remarkable thing is that the ...

Our Milky Way galaxy ... considerably. "Planets will keep on orbiting as usual, though the constellation patterns visible from each planet will change," Dodson-Robinson said. Andromeda would ...

Moons orbit planets ... a little more complicated. Our galaxy is part of a collection of galaxies called the Local Group, ...

That’s almost half the distance to Andromeda. Have you ever seen the Andromeda galaxy? Go outside after dark this month and look high up in the northeast sky and you’ll find the W-shaped ...

This illustration shows a stage in the predicted merger between our Milky Way galaxy and the ... [+] neighboring Andromeda galaxy, as it will unfold over the next several billion years.