Eight extrasolar planets discovered
Posted: Mon, Oct 15, 2001, 7:35 PM ET (2335 GMT)
Astronomers announced Monday that they have discovered eight more planets orbiting other stars, including three whose orbits are similar to planets in our own solar system. The eight planets, discovered by an international team using telescopes in Australia, California, and Hawaii, have masses from 0.8 to 10 times that of Jupiter. They orbit their stars at distances ranging from 0.07 to 3 astronomical units (10 to 450 million km). Three of the planets have some similarities to planets in our own solar system, with masses of 1 to 3 Jupiter masses and near-circular orbits more than 1 AU from their stars. Those planets stand in stark comparison to many other extrasolar planets, which have been either far too massive, far too close to their stars, or in highly elliptical orbits. All eight planets were discovered indirectly using the radial velocity technique that has found the vast majority of the extrasolar planets found to date.
Astronomers announced Monday that they have discovered eight more planets orbiting other stars, including three whose orbits are similar to planets in our own solar system. The eight planets, discovered by an international team using telescopes in Australia, California, and Hawaii, have masses from 0.8 to 10 times that of Jupiter. They orbit their stars at distances ranging from 0.07 to 3 astronomical units (10 to 450 million km). Three of the planets have some similarities to planets in our own solar system, with masses of 1 to 3 Jupiter masses and near-circular orbits more than 1 AU from their stars. Those planets stand in stark comparison to many other extrasolar planets, which have been either far too massive, far too close to their stars, or in highly elliptical orbits. All eight planets were discovered indirectly using the radial velocity technique that has found the vast majority of the extrasolar planets found to date.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
NASA to launch Nancy Grace Roman Space Telescope in September
Posted: Sat, Apr 25 10:54 AM ET (1454 GMT) |
|
news links
|
|
Tuesday, April 28
DOD budget proposes new $250 million space operations center on Schriever
Colorado Springs Gazette — 4:58 am ET (0858 GMT) US Picks Companies for Golden Dome Weapon That Might Not Be Affordable
Business Insider — 4:58 am ET (0858 GMT) S. Korea nears completion of five-satellite network to monitor North Korea
Korea Herald — 4:57 am ET (0857 GMT) Atlas V rocket successfully launches Amazon satellites from Cape Canaveral
WESH-TV Orlando — 4:55 am ET (0855 GMT) SpaceX Details Bumps To Starship V3 First Flight
Aviation Week — 4:54 am ET (0854 GMT) |
