Astronomers discover ancient solar system
Posted: Wed, Jan 28, 2015, 7:36 AM ET (1236 GMT)
Astronomers announced Tuesday the discovery of a solar system with five planets estimated to be 11 billion years old, the oldest solar system yet found. The planets orbit Kepler-444, a star 117 light-years from the Earth and about 25 percent smaller than the Sun. The star has five planets with sizes estimates to be between that of Mercury and Venus, all orbiting very close to the star. Astronomers calculated the star's age, based on measurements of its oscillations, at 11.2 billion years old, making the star the oldest one known to have planets. It also indicates that planetary systems existed within a few billion years after the Big Bang.
Astronomers announced Tuesday the discovery of a solar system with five planets estimated to be 11 billion years old, the oldest solar system yet found. The planets orbit Kepler-444, a star 117 light-years from the Earth and about 25 percent smaller than the Sun. The star has five planets with sizes estimates to be between that of Mercury and Venus, all orbiting very close to the star. Astronomers calculated the star's age, based on measurements of its oscillations, at 11.2 billion years old, making the star the oldest one known to have planets. It also indicates that planetary systems existed within a few billion years after the Big Bang.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Monday, August 3
How Canada Rocket Company plans to fill a void left by SpaceX
National Post — 6:42 am ET (1042 GMT) Flight 13 of Starship was (mostly) a triumph for SpaceX
The Hill — 6:42 am ET (1042 GMT) Danuri lunar orbiter to record Falcon 9 stage’s collision on moon’s surface
JoongAng Daily — 6:39 am ET (1039 GMT) What to watch ahead of SpaceX's first earnings report and a huge unlock of company stock
Business Insider — 6:38 am ET (1038 GMT) Danuri to Observe SpaceX Rocket's Lunar Collision
Chosun Ilbo — 6:36 am ET (1036 GMT) |
