WHAT'S INSIDE: ASTRONOMY

Astronomy is a broad discipline covering all facets of astrophysics. In this section you can learn about the origins of the universe, black holes and other astronomical phenomena.
  • Constellations
  • Observatories
  • Stars
  • The Solar System
FEATURED: ASTRONOMY

Cassiopeia, in Greek legend, an Ethiopian queen. She was the wife of Cepheus and the mother of Andromeda.

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What happens when the sun eats a comet?

Do the two meet for one final, fantastic explosion? Or maybe the sun just gets a bit of wind? Or maybe nothing of consequence happens at all? Only one way to find out.

Neptune Explained

Neptune is the eighth planet from the sun, the fourth largest, and a gas planet. It is named after the Roman god of the sea. Neptune is four times the size of Earth, and its day lasts a little more than16 hours. Its year is about 165 Earth years. Neptune's orbit is a perfect circle. The last stop on spacecraft Voyager's epic trip through the solar system was the gas giant Neptune.

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