The beautiful Trifid Nebula is a cosmic study in colorful contrasts. Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid Nebula is about 40 light-years across.
The Eridanus Black Hole The Hubble Deep Space Field is an image we obtained by pointing the Hubble telescope at “empty” space, and it contains thousands of distant galaxies. Whenever we look at an “empty” space in the Eridanus constellation, though, we see nothing. At all. It’s just a black void spanning a width of over a billion light years.