Nearby Star System May Host an Earth-Like Planet

New findings suggest that a possible Earth-like planet may be hiding in our neck of the woods.

4. 24. 16 by Jelor Gallego
UPR Arecibo, NASA Hubble, Stellarium.
Image by UPR Arecibo, NASA Hubble, Stellarium.

“We found another one”

There are many reasons to explore the cosmos; however, one of the most intriguing reasons is to find another planet with life. We send out probes and we look towards the sky with our telescopes and radar dishes, all in the hope of finding another Earth. We have discovered many planets to date that seem to be rather Earth-like, and we are finding more.

Case in point, astronomers from the University of Texas have pinpointed the location of a possible Earth-like planet not far from here. Of course, it could also be rather unEarth-like. Hopefully, additional research will give us a definitive answer soon.

Gliese 832 is a red dwarf sun half the mass and radius of our own star. It is 16 light-years away from our solar system, and it has two identified exoplanets…and a possible third just cropped up.

The paper discussing the finding, published in arXiv, says that the potential Earth-like planet may exist between the two exoplanets, Gliese 832B and Gliese 832C.


Gliese 832B is a gas giant that is 0.64 the mass of Jupiter, and it orbits its star at 3.5 AU. The other planet, Gliese 832C, is a rocky world about 5 times as massive as Earth, and it orbits the star at a very close 0.16 AU. Both cannot harbor life as we know it, as 832B is a gas giant and 832C is too close to the star.

Based on a hunch

The already discovered planets were seen because of the radial velocity technique, which measures the gravitational effect of the planets on the star. The astronomers had a hunch that another planet may exist between the vast distance of 832B and 832C. They reexamined the data, and concluded that another planet may exist between them.

The newly discovered planet is still hypothetical at this point, and the researchers put its mass at between 1 and 15 Earth masses (yeah kind of a big margin there), and its orbit is between 0.25 to 2.0 AU from Gliese 382 (1 AU is roughly the distance from Earth to the Sun).

Conclusions such as these are not made definitively, but only so that planet hunters and telescopes such as Kepler know specifically where to look.


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