Quote of the Day

My goal is simple. It is complete understanding of the universe, why it as it is and why it exists as all.
- Stephen Hawking

Fact of the Day

Galileo's second Earth flyby brought the spacecraft within 303 kilometers (182 miles) of the Earth's surface. The gravity assist added 3.7 kilometers per second (8,300 miles per hour) to the spacecraft's speed in its solar orbit. As always, Galileo's navigation was impeccable: the spacecraft was within a kilometer of its intended path, and was just 0.1 second early.