Science
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- Sea and Sky: Travelport Entrance
- Fun and informative site for kids of all ages. Games, resources, galleries, and latest developments in exploration of sea and sky. Lots of great graphics.
- 324
- 'Death Spiral' Around a Black Hole Yields Tantalizing Evidence of Event Horizon
- Article explains how Hubble telescope has observed the disappearance of matter.
- 325
- Black Hole FAQ
- Answers to black hole questions like "How big is a black hole?" ,"How do black holes evaporate?", and "What is a wormhole?".
- 327
- Black Holes
- Information about black holes and how we know they exist, links to glossary terms and a movie about a "Journey into a Black hole."
- 330
- The Black Hole at the center of our Galaxy
- About the 2004 discovery that the center of our galaxy holds a black hole 3.7 million times heavier than the Sun
- 331
- Lunar Eclipses 2000-2020
- University of Michigan's list of lunar eclipses, but doesn't say where they can best be viewed.
- 332
- NASA Eclipse Web Site
- Includes data about past, present, and future eclipses. Calculations are by Fred Espenak.
- 333
- Solar Eclipses
- Tells how often they happen, gives a diagram that shows what the position of the earth and sun and moon are, and defines the types of solar eclipses. Includes animations of eclipses.
- 334
- Galileo Project Home
- NASA's homepage for the Jupiter-orbiting spacecraft. Includes mission reports, planetary facts, a summary of Galilean discoveries, animations, and an extensive photograph gallery.
- 336
- Earth From Space
- A collection of photographs taken from various spacecraft, as well as captions, and quotations from the astronauts.
- 337
- Earth at Night
- A photograph made from several views of the whole world, showing city lights and areas of greater population. From NASA's Astronomy Picture of the Day series.