News / Science & Technology

New 'Super-Earth' Found With Fine-Tuned Telescope Readings

A NASA image of space
A NASA image of space

A distant planet barely bigger than Earth has been discovered in our galaxy, but it might have been missed if not for the combined efforts of several observatories both on and around our home planet.

U.S. space agency astronomers say the hard-to-detect data gathered during multiple readings by the Kepler space telescope and two ground observatories revealed tiny clues they needed to make the improbable discovery of a so-called super-Earth planet that otherwise would have gone undetected.

NASA's orbiting Kepler probe initially detected the super-Earth - a distant rocky planet about the size of the Earth - in our Milky Way galaxy about 350 light years from our solar system. Overlapping readings taken by two ground-based telescopes at the Kitt Peak National Observatory in Arizona confirmed the discovery.

Discovering a relatively small, Earth-sized planet so far away is remarkable because usually only distant planets at least as big as our solar system’s monstrous gas-giant, Jupiter, can be detected - and Jupiter has nearly 320 times more mass than the Earth, with 120 times more surface area.  

The newly-found alien world is relatively small at only 1.6 times the size of the Earth. It also streaks around its very bright star in just 2.8 days, and orbits from a scorchingly close distance of 6 million kilometers, making the bizarre super-Earth more difficult to track and identify.  

The NASA astronomers say the task took 65 scientists 15 months and that the multiple precision measurements and other readings taken by Kepler and the Kitt Peak telescopes made such a sensitive planet detection possible.

In a related development, the California Institute of Technology, Caltech, on Friday announced the significant discovery of 18 Jupiter-sized planets.  The huge alien worlds, or exoplanets, were detected in a decade-long survey of more than 300 expanding, aging stars.  

Details of the separate NASA and Caltech discoveries will appear in reports published in an upcoming edition of Astrophysical Journal.

Astronomers search for distant planets by measuring a star's brightness. Planets passing between the star and the telescope will cause its instruments to register a slight dimming in the star's brightness.

The NASA scientists emphasize that just because a planet is categorized as a super-Earth does not mean it is Earth-like.  They say the newly-found super-Earth is heavy and dense, with a mass no more than 10 times that of the Earth, and it has a surface temperature of 1,630 degrees Celsius, which is hot enough to melt iron.   

In contrast to the strange exoplanet's brief 2.8-day year and scorching proximity to its star, the Earth is a comfortable 150 million kilometers away from the Sun, and takes a leisurely 365 days to make a complete solar orbit.

You May Like

Could Nemtsov Threaten Putin in Death as in Life?

Dynamic and debonair opposition leader had supported liberal economic reforms, criticized Russian president's aggression in Ukraine More

Oil Smuggling Highlights Challenges in Shutting Down IS Finances

Pentagon spokesman says Islamic State 'certainly continues to get revenue from the oil industry black market' but that airstrikes have made a dent More

India Focuses on Infrastructure, Investment to Propel Economy

Government expects economy to grow at 8 to 8.5 percent in next fiscal year More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
US Supreme Court Hears Hijab Discrimination Casei
X
Katherine Gypson
February 25, 2015 11:30 PM
The U.S. Supreme Court has heard opening arguments in a workplace religious discrimination case that examines whether a clothing store can refuse to hire a young woman for wearing the headscarf she says is a symbol of her Muslim faith. Katherine Gypson reports from the Supreme Court.
Video

Video US Supreme Court Hears Hijab Discrimination Case

The U.S. Supreme Court has heard opening arguments in a workplace religious discrimination case that examines whether a clothing store can refuse to hire a young woman for wearing the headscarf she says is a symbol of her Muslim faith. Katherine Gypson reports from the Supreme Court.
Video

Video Falling Gas Prices Hurt Nascent Illinois Hydraulic Fracturing Industry

Falling oil prices are helping consumers purchase cheaper petroleum at the pump. But that’s made hydraulic fracturing or “fracking” less economically viable for the companies in the United States invested in the process. VOA’s Kane Farabaugh reports on one Midwestern town that was hoping to change its fortunes by cashing in on the next big U.S. oil boom.
Video

Video Fighting in Sudan's South Kordofan Fuels Mass Displacement

Heavy fighting in Sudan's South Kordofan state is causing hundreds of thousands to flee into uncertain conditions. Local aid organizations estimate as many as 400,000 civilians have been internally displaced since the conflict began more than three years ago, while another 250,000 have fled across the border to refugee camps in South Sudan. VOA's Adam Bailes reports.
Video

Video Lao Dam Project Runs Into Opposition

A Lao dam project on a section of the Mekong River is drawing opposition from local fishermen, international environmental groups and neighboring countries. VOA's Say Mony visited the region to investigate the concerns. Colin Lovett narrates.
Video

Video A Filmmaker Discovers Her Biracial Identity in "Little White Lie

Lacey Schwartz grew up in an upper middle-class Jewish family, in a town in upstate New York where almost everyone she knew was white. She assumed that she was, as well. Her recent documentary, Little White Lie, tells the story of how she uncovered the secret of her true racial background. VOA’s Carolyn Weaver has more on the film.
Video

Video Deep Under Antarctic Ice Sheet, Life!

With the end of summer in the Southern hemisphere, the Antarctic research season is over. Scientists from Northern Illinois University are back in their laboratory after a 3-month expedition on the Ross Ice Shelf, the world’s largest floating ice sheet. As VOA’s Rosanne Skirble reports, they hope to find clues to explain the dynamics of the rapidly melting ice and its impact on sea level rise.
Video

Video US-Cuba Normalization Talks Resume Friday

Negotiations aimed at normalizing diplomatic relations between the U.S. and Cuba resume Friday. On the table: lifting a half-century trade embargo and easing banking and travel restrictions. There's opposition in Congress, but some analysts say there may be sufficient political and economic incentives in both nations for a potential breakthrough this year. VOA's Mil Arcega reports.
Video

Video Pakistan's Deadline For SIM Registration Has Cellphone Users Scrambling

Pakistani cell phone users have until midnight Thursday to register their SIM cards, or their service will be cut off. While some privacy experts worry about government intrusion, many Pakistanis are just worried about keeping their phone lines open. VOA Deewa reporter Arshad Muhmand has more from Peshawar.
Video

Video Myanmar Warns Factory Workers to End Strikes

Outside Myanmar's main city Yangon, thousands of workers walked off their jobs earlier this month demanding a doubling of their wages, pay raises after a year and input from labor unions on industrial regulations. Since Friday, the standoff has grown more tense as police moved in to disrupt the sit-ins, resulting in clashes that injured people from both sides. VOA correspondent Steve Herman visited industrial zones which have become a focus of Myanmar's fledgling workers rights movement.
Video

Video Oscar Winners Do More Than Thank the Academy

The Academy Awards presentation is Hollywood’s night to reward the best movies from the previous year. It’s typically a lot of glitter, a lot of thank you’s, a lot of speeches. But many of this year’s speeches carried messages beyond the thank you's. VOA’s Carolyn Presutti takes a look.

All About America

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More