https://flic.kr/p/SuMrPQ | VDB 38 Raspberry Nebula | Bluish reflection nebula illuminated by a bright blue-white 6th magnitude star. The complex is located about 726 light years from us in the constellation Orion. The surrounding red nebulosity is due to ionized hydrogen (H-Alpha). The blue nebula is in front of most of the H-Alpha as can be discerned to the lower right of center where it passes over portions of it. Total exposure time was 220.5 minutes using the 457mm F/4.2 Newtonian.
The Andromeda Galaxy is 2 million light years away from us so what we see now is how it appeared 2 million years ago. It will collide with our Milky Way 2 billions years from now. The two galaxies are heading towards each other at a rate of 430 km/hr.