Featured Research

from universities, journals, and other organizations

New Earth-like planets found orbiting a Sun-like star

Date:
April 18, 2013
Source:
Carnegie Institution
Summary:
A team of scientists has discovered two Earth-like planets in the habitable orbit of a Sun-like star. Using observations gathered by NASA's Kepler Mission, the team found five planets orbiting a Sun-like star called Kepler-62. Four of these planets are so-called super-Earths, larger than our own planet, but smaller than even the smallest ice giant planet in our Solar System. These new super-Earths have radii of 1.3, 1.4, 1.6, and 1.9 times that of Earth. In addition, one of the five was a roughly Mars-sized planet, half the size of Earth.

This artist's conception depicts Kepler-62e, a super-Earth-size planet in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra. Kepler-62e orbits it's host star every 122 days and is roughly 60 percent larger than Earth in size. Scientists do not know if Kepler-62e is a waterworld or if it has a solid surface, but its discovery signals another step closer to finding a world similar to Earth.
Credit: Image is courtesy of NASA/Ames/JPL-Caltech

A team of scientists, including Carnegie's Alan Boss, has discovered two Earth-like planets in the habitable orbit of a Sun-like star.

Related Articles


Their work is published in Science Express.

Using observations gathered by NASA's Kepler Mission, the team, led by William Borucki of the NASA Ames Research Center, found five planets orbiting a Sun-like star called Kepler-62. Four of these planets are so-called super-Earths, larger than our own planet, but smaller than even the smallest ice giant planet in our Solar System. These new super-Earths have radii of 1.3, 1.4, 1.6, and 1.9 times that of Earth. In addition, one of the five was a roughly Mars-sized planet, half the size of Earth.

Kepler-62 is one of about 170,000 stars observed by the Kepler Space Telescope, with a mass about 69% of that of our Sun. The Kepler Space Telescope reveals for planets orbiting a star by detecting a small, temporary dimming of the star as a planet passes between it and the telescope.

The two super-Earths with radii of 1.4 and 1.6 Earth radii orbit their star at distances where they receive about 41% and 120%, respectively, of the warmth from their star that the Earth receives from the Sun. The planets are thus in the star's habitable zone; they have the right temperatures to maintain liquid water on their surfaces and are theoretically hospitable to life.

Theoretical modeling of the super-Earth planets, Kepler-62e and Kepler-62f, suggests that both could be solid, either rocky--or rocky with frozen water.

"This appears to be the best example our team has found yet of Earth-like planets in the habitable zone of a Sun-like star," Boss said.


Story Source:

The above story is based on materials provided by Carnegie Institution. Note: Materials may be edited for content and length.


Journal Reference:

  1. William J. Borucki, Eric Agol, Francois Fressin, Lisa Kaltenegger, Jason Rowe, Howard Isaacson, Debra Fischer, Natalie Batalha, Jack J. Lissauer, Geoffrey W. Marcy, Daniel Fabrycky, Jean-Michel Dιsert, Stephen T. Bryson, Thomas Barclay, Fabienne Bastien, Alan Boss, Erik Brugamyer, Lars A. Buchhave, Chris Burke, Douglas A. Caldwell, Josh Carter, David Charbonneau, Justin R. Crepp, Jψrgen Christensen-Dalsgaard, Jessie L. Christiansen, David Ciardi, William D. Cochran, Edna DeVore, Laurance Doyle, Andrea K. Dupree, Michael Endl, Mark E. Everett, Eric B. Ford, Jonathan Fortney, Thomas N. Gautier III, John C. Geary, Alan Gould, Michael Haas, Christopher Henze, Andrew W. Howard, Steve B. Howell, Daniel Huber, Jon M. Jenkins, Hans Kjeldsen, Rea Kolbl, Jeffery Kolodziejczak, David W. Latham, Brian L. Lee, Eric Lopez, Fergal Mullally, Jerome A. Orosz, Andrej Prsa, Elisa V. Quintana, Dimitar Sasselov, Shawn Seader, Avi Shporer, Jason H. Steffen, Martin Still, Peter Tenenbaum, Susan E. Thompson, Guillermo Torres, Joseph D. Twicken, William F. Welsh, and Joshua N. Winn. Kepler-62: A Five-Planet System with Planets of 1.4 and 1.6 Earth Radii in the Habitable Zone. Science, 2013; DOI: 10.1126/science.1234702

Cite This Page:

Carnegie Institution. "New Earth-like planets found orbiting a Sun-like star." ScienceDaily. ScienceDaily, 18 April 2013. <www.sciencedaily.com/releases/2013/04/130418140957.htm>.
Carnegie Institution. (2013, April 18). New Earth-like planets found orbiting a Sun-like star. ScienceDaily. Retrieved March 26, 2015 from www.sciencedaily.com/releases/2013/04/130418140957.htm
Carnegie Institution. "New Earth-like planets found orbiting a Sun-like star." ScienceDaily. www.sciencedaily.com/releases/2013/04/130418140957.htm (accessed March 26, 2015).

Share This


More From ScienceDaily



More Space & Time News

Thursday, March 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Supermassive Blackhole Detector Ready for Business

Supermassive Blackhole Detector Ready for Business

Reuters - Innovations Video Online (Mar. 25, 2015) — Construction of the world&apos;s largest and most powerful observatory designed to detect and analyze gamma rays has been completed in Mexico. Gamma ray particles are considered the most energetic in the universe and scientists hope to use the observatory to learn more about the supernovas and black holes that produce them. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Rocket Blasts Off Carrying U.S. Air Force GPS Satellite

Rocket Blasts Off Carrying U.S. Air Force GPS Satellite

Reuters - News Video Online (Mar. 25, 2015) — A U.S. Air Force GPS IIF-9 satellite launches aboard a United Launch Alliance Delta IV rocket into semi-synchronous orbit. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Opportunity's Marathon: The Mars Rover Just Keeps Going

Opportunity's Marathon: The Mars Rover Just Keeps Going

Newsy (Mar. 24, 2015) — NASA&apos;s Opportunity Mars Rover finished a full marathon, making it the first human creation to do a full 26.2 miles on another planet. Video provided by Newsy
Powered by NewsLook.com
Twin Astronaut to Break NASA Record in Study

Twin Astronaut to Break NASA Record in Study

AP (Mar. 23, 2015) — NASA astronaut Scott Kelly will be the first American to spend a year aboard the International Space Station in an experiment to test human endurance in space, while his twin brother&apos;s health is compared on Earth. (March 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

More Coverage


Three Super-Earth-Size Planets Found in 'habitable Zone'

Apr. 18, 2013 — NASA's Kepler mission has discovered two new planetary systems that include three super-Earth-size planets in the "habitable zone," the range of distance from a star where the surface ... read more

New Techniques Allow Discovery of Smallest Super-Earth Exoplanets

Apr. 18, 2013 — New research has perhaps the smallest super-earth planet in its host star habitable zone. Kepler 62f is a small, probably rocky planet orbiting a sun-like star in the Lyra constellation. The planet ... read more

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins