facebook
twitter
rss
account
search
search
 

Study: More Earth-size planets out there

Oct. 28, 2010 at 7:37 PM   |   Comments

PASADENA, Calif., Oct. 28 (UPI) -- U.S. researchers say a survey reveals small planets are more common than large ones and one in four sun-like stars may have Earth-like planets.

In a project funded by NASA and the University of California, the W.M. Keck Observatory atop Mauna Kea in Hawaii, was used to survey 166 sun-like stars for planets of different sizes, a NASA release said Thursday.

The survey found more small planets than large ones, suggesting they are more prevalent in our Milky Way galaxy, NASA said.

"We studied planets of many masses -- like counting boulders, rocks and pebbles in a canyon -- and found more rocks than boulders, and more pebbles than rocks," Andrew Howard of the University of California, Berkeley, said.

"Our ground-based technology can't see the grains of sand, the Earth-size planets, but we can estimate their numbers," he said.

"Earth-size planets in our galaxy are like grains of sand sprinkled on a beach -- they are everywhere."

The study has been published in the journal Science.

Topics: Mauna Kea
© 2010 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Recommended UPI Stories
Featured UPI Collection
trending
2014: The Year in Music [PHOTOS]

2014: The Year in Music [PHOTOS]

Most Popular
1
SpaceX rocket explodes in test flight over Texas
2
Tech industry All Stars developing 'Star Trek'-style communication badges
3
Latvia boasts world's first net for migrating bats
4
Neanderthals and humans interacted for thousands of years
5
Fish can smell a bad coral reef
Trending News
Video
x
Feedback