Starship Asterisk*

Would our Sun look that big if viewed from Mercury? Mac

This is a spin-off from the APOD 23 april 2008 blog "Full Moon Next to Venus". I believe this subject deserves a discussion of it's own. That earlier discussion brought up the idea that here on Earth we can see the stars at night because the Earth's atmosphere spreads the light to such a d...

SO - by this discussion one is led to believe that if there is life in the universe on some other planet that has a very thin atmosphere then that life would not "see" any stars or other planets other than their own star. APOD 20 November 2007 (picture taken with a camera but not a time ex...

Can astronauts aboard the international space station see stars? All the pictures (obviously taken by a camera) of the space station show a dark sky in the background.

Thanks, I'm old but new to taking close looks at the heavens.

In your photo "Spiral Galaxies in Collision" the galaxies appear to be rotating in different directions. Is this normal?