Astronomers discover most Earth-like planet yet
Updated: 2015-07-24 07:31
(Agencies)
|
||||||||
An artistic illustration compares Earth (L) to a planet beyond the solar system that is a close match to Earth, called Kepler-452b in this NASA image released on July 23, 2015. [Photo/Agencies] |
CAPE CANAVERAL, Fla. - A planet believed to be remarkably similar to Earth has been discovered orbiting a distant sun-like star, bolstering hopes of finding life elsewhere in the universe, US scientists said on Thursday.
The planet, which is about 60 percent bigger than Earth, is located 1,400 light years away in the constellation Cygnus. It was discovered by astronomers using NASA's Kepler space telescope and circles a star that is similar in size and temperature to the sun, but older.
"In my mind, this is the closest thing we have to another planet like the Earth," astronomer Jon Jenkins, with the US space agency's Ames Research Center in Moffett Field, California, told reporters on a conference call.
The planet, dubbed Kepler-452b, orbits a star that is about 6 billion years old, compared to the 4.6 billion year age of the sun.
"It's simply awe-inspiring to consider that this planet has spent 6 billion years in the habitable zone of its star," Jenkins said.
"That's considerable time and opportunity for life to arise somewhere on its surface or in its oceans should all the necessary ingredients and conditions for life exist on this planet," he said.
Kepler-452b is positioned about as far from its parent star as Earth is from the sun, completing an orbit in 385 days, compared to Earth's 365-day orbit. At that distance, surface temperatures would be suitable for liquid water, a condition believed to be critical for life.
- Across America over the week (July 17- July 23)
- Unusual but true: 'Love' conquers all
- Six dead as rainstorms wreak havoc in China
- Guangzhou Evergrande stun Bayern in penalty shootout
- 10 domestic films to see this summer
- Tricks airports use to scare away birds
- The highs and lows of a stock market investor
- Culture insider: 7 things you may not know about Major Heat
Most Viewed
Editor's Picks
Seventh China-US strategic dialogue |
Premier Li embarks on Latin America visit |
What do we know about AIIB |
Full coverage of Boao Forum for Asia |
Annual legislative and political advisory sessions |
Spring Festival trends reflect a changing China |
Today's Top News
China eyes deepened cooperation with overseas NGOs
Beijing condemns Somali attack, mourns deaths
Monster Hunt breaks Chinese box office record
Olympic bid panel cites city's merits
Astronomers discover most Earth-like planet yet
Seattle Chinatown leader killed in shooting
Flight details of Obama's Kenya trip leaked
2 killed, several injured in Louisiana theater shooting
US Weekly
Geared to go |
The place to be |