Super-Earth: 1 of 50 Newfound Alien Planets, Could Potentially Support Life
2011 09 14

By Denise Chow | CSMonitor.com


Super-Earth: The newfound haul of alien planets includes 16 super-Earths, which are potentially rocky worlds that are more massive than our planet. One in particular has captured astronomers’ attention because it orbits at the edge of its star’s habitable zone, suggesting conditions could be ripe to support life.



This artist rendering provided by The Europeans Southern Observatory shows the planet orbiting the Sun-like star HD 85512 in the southern constellation of Vela (The Sail). This planet is one of sixteen super-Earths discovered by the HARPS instrument on the 3.6-metre telescope at ESO’s La Silla Observatory.
Artist rendering provided by The European Southern Observatory/AP


More than 50 new alien planets — including one so-called super-Earth that could potentially support life — have been discovered by an exoplanet-hunting telescope from the European Southern Observatory (ESO).

The newfound haul of alien planets includes 16 super-Earths, which are potentially rocky worlds that are more massive than our planet. One in particular - called HD 85512 b - has captured astronomers’ attention because it orbits at the edge of its star’s habitable zone, suggesting conditions could be ripe to support life.

The exoplanet findings came from observations from the High Accuracy Radial velocity Planet Searcher instrument, or HARPS. The HARPS spectrograph is part of ESO’s 11.8-foot (3.6-meter) telescope at the La Silla Observatory in Chile. [Illustration and video of alien planet HD 85512 b]

“The harvest of discoveries from HARPS has exceeded all expectations and includes an exceptionally rich population of super-Earths and Neptune-type planets hosted by stars very similar to our sun," HARPS team leader Michel Mayor of the University of Geneva in Switzerland said in a statement. "And even better — the new results show that the pace of discovery is accelerating."

The potentially habitable super-Earth, officially called HD 85512 b, is estimated to be only 3.6 times more massive than Earth, and its parent star is located about 35 light-years away, making it relatively nearby. HD 85512 b was found to orbit at the edge of its star’s habitable zone, which is a narrow region in which the distance is just right that liquid water could exist given the right conditions.


Video from: YouTube.com

"This is the lowest-mass confirmed planet discovered by the radial velocity method that potentially lies in the habitable zone of its star, and the second low-mass planet discovered by HARPS inside the habitable zone,” said exoplanet habitability expert Lisa Kaltenegger, of the Max Planck Institute for Astronomy in Germany and Harvard Smithsonian Center for Astrophysics in Boston.

Further analysis of HD 85512 b and the other newfound exoplanets will be able to determine more about the potential existence of water on the surface.

"I think we’re in for an incredibly exciting time," Kaltenegger told reporters in a briefing today (Sept. 12). "We’re not just going out there to discover new continents — we’re actually going out there to discover brand new worlds."

The HARPS spectrograph is designed to detect tiny radial velocity signals induced by planets as small as Earth if they orbit close to their star.

Astronomers used HARPS to observe 376 sunlike stars. By studying the properties of all the alien planets detected by HARPS so far, researchers found that approximately 40 percent of stars similar to the sun is host to at least one planet that is less massive than the gas giant Saturn.

In other words, approximately 40 percent of sunlike stars have at least one low-mass planet orbiting around it. On the other hand, the majority of alien planets with a mass similar to Neptune appear to be in systems with multiple planets, researchers said.

Astronomers have previously discovered 564 confirmed alien planets, with roughly 1,200 additional candidate worlds under investigation based on data from the Kepler space observatory, according to NASA’s Jet Propulsion Laboratory in Pasadena, Calif.


Article from: csmonitor.com




Related Articles
Kepler Spacecraft Discovers "Invisible Planet"
Planetary Commotion - Outside Threat Imminent?
Alien Planet Made of Diamond Discovered
Ancient Aliens - What if Life on Earth began in Outer Space? (History Channel Documentary)
Life on Mars? Fossil find shows it’s possible
"ET life inevitably exists due to universal laws, and we’ll soon discover it"
Life could thrive on planets with two suns, but the plants would be black


Latest News from our Front Page

Pre-historic tokens used in conjunction with cuneiform
2014 07 22
An archaeological dig in southeast Turkey has uncovered a large number of clay tokens that were used as records of trade until the advent of writing, or so it had been believed. But a new find of tokens, dates from a time when writing was commonplace – thousands of years after it was previously assumed this technology had become obsolete. Researchers ...
Are immigration opponents Nazis?
2014 07 22
It seems the usual suspects are calling anyone who opposes unlimited immigration to be a "Nazi". The Left seems to be in constant fear of "Nazis" that lurk in public policy discussions and I assume under their beds. If you oppose any Leftist position, you are a.... take a wild guess...wait for it.... a NAZI! Tim Wise recently went ...
What Did US Spy Satellites See in Ukraine?
2014 07 22
Exclusive: The U.S. media’s Ukraine bias has been obvious, siding with the Kiev regime and bashing ethnic Russian rebels and Russia’s President Putin. But now – with the scramble to blame Putin for the Malaysia Airlines shoot-down – the shoddy journalism has grown truly dangerous, says Robert Parry. In the heat of the U.S. media’s latest war hysteria – rushing to ...
Oh, Great: Robots Are Set to Conduct National Security Clearance Interviews
2014 07 22
Advancing a career in the US government might soon require an interview with a computer-generated head who wants to know about that time you took ketamine. Psychologists at the National Center for Credibility Assessment (NCCA) are developing an interview system that uses a responsive on-screen avatar for the first stage of the national security clearance process. Initial screening for a variety ...
Is Anything on the Internet Real Anymore?
2014 07 22
Is there anybody…out there? I promise I’m a real person asking this question and typing this article…but beyond that, I can’t promise much else about anything you or I see on the Internet. This article on ZDNet, “GCHQ’s dark arts: Leaked documents reveal online manipulation, Facebook, YouTube snooping,” confirms — beyond a shadow of any possible doubt — that a barrage of ...
More News »