Planets Round Other Stars

New techniques and new telescopes have allowed us to discover a number of planets orbiting around other stars. We can't see the planets themselves, but we can see the stars "wobbling" as the planets orbit round them. All of these planets are very large (the size of Jupiter or larger), probably because our telescopes are not yet powerful enough to detect the tiny stellar wobbling that smaller planets would generate.

Many Web sites deal with the search for extra-solar planets, and after a while they all link to one another. Here are three places to start.

  • Here are some readable summaries that were current as they were written (be warned that the field is advancing quickly, with over 100 extrasolar planets now identified).

  • June 2002: feature on the discovery of a Jupiter-sized planet in a Jupiter-sized orbit around a yellow star much like the Sun.

    Last update September 2005.

    All links checked September 29, 2005.

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