Astronomy

Mona Evans

Jupiter's moon Europa seems to have a large ocean under its icy crust. Never mind Mars or Venus! Many scientists think that Europa would be a good place to look for life.

Mona Evans

King of the Roman gods, comet-killer, two and a half times the mass of all the other planets put together, shortest day of any planet in the Solar System. It's Jupiter! Find out more.

Mona Evans

Google doodles are little drawings and animations that incorporate the Google name into a presentation of a person or event of note. Here are five doodles with an astronomy theme, including asteroids, a lunar eclipse and how the speed of light was calculated by observing Jupiter and Io.

Mona Evans

The starter's pistol for the space race was fired on October 4, 1957. It was in the form of a small highly-polished sphere that orbited the Earth every 98 minutes. This was the Soviet Union's Sputnik, Earth's first artificial satellite. It shook up the United States, and there was more to come.

Mona Evans

Neptune is the planet discovered mathematically and whose detection led to a heated rivalry between British and French astronomers. But who was the first person actually to see Neptune?

Mona Evans

Autumn begins on the equinox, the day the Sun crosses the equator. The earliest known civilizations celebrated the equinoxes, and they're still celebrated in many places. One of the biggest autumn celebrations is the Chinese Moon Festival. A traditional Chinese garden has a moon-watching pavilion.

Mona Evans

Caroline Herschel was an intelligent young woman trapped in domestic servitude by her mother. Her brother William rescued her and trained her as a singer. After he discovered the planet Uranus, the two of them ended up forming a great partnership whose work revolutionized the study of astronomy.

Mona Evans

As the long days of summer slip away and the skies darken earlier, the first stars of autumn appear. The centerpiece is the Great Square of Pegasus. It's the key to other autumn sights, including the most distant object you can see without a telescope - it's a billion billion miles away.

Mona Evans

One of the greatest astronomers of all time was a Danish nobleman with a metal nose, who was also a publisher, an alchemist and the Imperial Mathematician. His astronomical observations were the key to the modern view of the Solar System.