Black Holes are theoretical objects in the Universe which, by their very nature, are almost impossible to directly detect. A black hole is an object which has so much mass and such a high density that...more
In the 1960's another startling discovery was made quite by accident. A pair of scientists at Bell Laboratories detected some annoying background noise using a special low noise antenna. The strange thing...more
Cosmology is the study of the overall structure of the universe. And just what is the Universe? Quite simply, it is everything that exists. However, from Earth we cannot observe everything in the Universe....more
The Universe today is very different from the Universe of the past and of the future. However, we can discover much about the past and the future from what we can currently observe. The Universe today...more
Elliptical galaxies are generally egg-shaped. If you have the chance to see one through a small telescope, it will probably look just like a fuzzy smudge to you, a piece of lint. But it is really formed...more
If you think that this globular cluster looks like a very round elliptical galaxy, you would be right! Elliptical galaxies and globular clusters have a lot in common. There is no gas or dust in a globular...more
In the 1920's the famous American astronomer Edwin Hubble made a startling discovery that forever changed our view of the Universe. He found that, no matter which direction he looked into space, distant...more
Irregular galaxies are appropriately named. This class includes any galaxy which cannot be classified as either spiral or elliptical. Thus in some sense every irregular galaxy is unique in it's appearance....more