Galaxies got their start nearly 14 billion years ago, with one unimaginably hot, dense and tiny pinpoint. How did we arrive at the universe's sprawling state of galactic affairs today?
WHAT'S INSIDE: ASTRONOMY
- The Solar System
If your idea of photographing the stars has nothing to do with Hollywood, you might be interested in astrophotography -- the sky's literally the limit.
A total solar eclipse is a rare event that can be an amazing thing to witness. Learn about solar eclipses and how to observe one safely.