Newly discovered super-Earth exoplanet may harbour alien life | World News - Hindustan Times
close_game
close_game

Newly discovered super-Earth exoplanet may harbour alien life

New York | ByIndo Asian News Service
Jan 16, 2019 01:10 PM IST

Barnard b (or GJ 699 b) is a super-Earth with a minimum of 3.2 Earth masses. It orbits its red star every 233 days near the snow-line, a distance where water freezes.

The recently discovered cold super-Earth exoplanet orbiting around the red dwarf Barnard -- the second closest star system to Earth -- has the potential to harbour primitive life, says a study.

The recently discovered cold super-Earth exoplanet orbiting around the red dwarf Barnard -- the second closest star system to Earth -- has the potential to harbour primitive life, says a study.(Getty Images/Representative Image)
The recently discovered cold super-Earth exoplanet orbiting around the red dwarf Barnard -- the second closest star system to Earth -- has the potential to harbour primitive life, says a study.(Getty Images/Representative Image)

Barnard b (or GJ 699 b) is a super-Earth with a minimum of 3.2 Earth masses. It orbits its red star every 233 days near the snow-line, a distance where water freezes.

Hindustan Times - your fastest source for breaking news! Read now.

Although likely cold (-170 degrees centigrade), it could still have the potential to harbour primitive life if it has a large, hot iron or nickel core and enhanced geothermal activity, said researchers from the Villanova University in the US.

“Geothermal heating could support ‘life zones’ under its surface, akin to subsurface lakes found in Antarctica,” said Edward Guinan, Astrophysicist at the varsity.

“We note that the surface temperature on Jupiter’s icy moon Europa is similar to Barnard b but because of tidal heating, Europa probably has liquid oceans under its icy surface,” Guinan added.

The results were announced at the 233rd meeting of the American Astronomy Society (AAS) in Seattle.

Although very faint, it may be possible for Barnard b to be imaged by future very large telescopes, according to Guinan.

“Such observations will shed light on the nature of the planet’s atmosphere, surface, and potential habitability,” he said.

The most significant aspect of the discovery of Barnard’s star b is that the two nearest star systems to the Sun are now known to host planets.

“This supports previous studies based on Kepler Mission data, inferring that planets can be very common throughout the galaxy, even numbering in the tens of billions,” said co-author Scott Engle from the varsity.

“Also, Barnard’s Star is about twice as old as the Sun -- about nine billion years old compared to 4.6 billion years for the Sun. The universe has been producing Earth-size planets far longer than we, or even the Sun itself, have existed.”

Unlock a world of Benefits with HT! From insightful newsletters to real-time news alerts and a personalized news feed – it's all here, just a click away! - Login Now!

Get Latest World News along with Latest News from India at Hindustan Times.
SHARE THIS ARTICLE ON
Share this article
SHARE
Story Saved
Live Score
OPEN APP
Saved Articles
Following
My Reads
Sign out
New Delhi 0C
Wednesday, March 27, 2024
Start 14 Days Free Trial Subscribe Now
Follow Us On