MAY 02, 2018 06:13 PM PDT

Astronomers Find Helium in an Exoplanetary Atmosphere for the First Time

WRITTEN BY: Anthony Bouchard

Determining the composition of exoplanetary atmospheres is no easy task given the sheer distance that separates them from Earth. After all, astronomers have enough trouble discerning the structure of the planetary atmospheres right here in our own solar system.

Nevertheless, an international team of researchers says they’ve discovered traces of helium in the atmosphere of a super-Neptune-like exoplanet called WASP-107b, which resides some 200 light years away from Earth. The findings appear in the journal Nature this week.

An artist's rendition of WASP-107b's cloudy helium-based atmosphere as it hazes around the exoplanet.

Image Credit: ESA/Hubble, NASA, M. Kornmesser

The presence of helium in WASP-107b’s atmosphere jumped out to the researchers immediately after they made observations with NASA’s Hubble Space Telescope. The helium signals were so strong that they believe the helium-rich atmosphere extends tens of thousands of kilometers into space.

"The helium we detected extends far out to space as a tenuous cloud surrounding the planet," said study co-author Tom Evans from the University of Exeter.

"If smaller, Earth-sized planets have similar helium clouds, this new technique offers an exciting means to study their upper atmospheres in the very near future."

Related: This could be one of the darkest exoplanets ever discovered

This is allegedly the first time astronomers have ever detected helium in an exoplanet’s atmosphere, which is reasonably mind-boggling given just how prevalent the element is thought to be in our universe.

The team notes that they made their discovery after examining how the host star’s light passed through the exoplanet’s atmosphere. As it would seem, the researchers seem confident that they can apply their discovery method to other known or undiscovered exoplanets.

"We hope to use this technique with the upcoming James Webb Space Telescope, for example, to learn what kind of planets have large envelopes of hydrogen and helium, and how long planets can hold on to their atmospheres," added Jessica Spake, a co-author of the study also from the University of Exeter.

"By measuring infrared light, we can see further out into space than if we were using ultraviolet light."

Related: Astronomers detect water vapor in the atmosphere of this distant Neptune-like exoplanet

WASP-107b was just discovered last year, and it’s approximately the same size as Jupiter, but with only around 12% of Jupiter’s planetary mass. Furthermore, WASP-107b orbits its host star once every six Earth days and maintains an atmospheric temperature of 500 C.

Despite its characteristics, this detection method may even work on rocky Earth-like exoplanets. It’s a theory that has yet to be tested in full, but the researchers should have sufficient time to study other exoplanets in the meantime.

Source: EurekAlert

About the Author
  • Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
DEC 13, 2019
Space & Astronomy
DEC 13, 2019
Just How Reusable is SpaceX's Falcon 9 Rocket?
  SpaceX originally designed its acclaimed Falcon 9 rocket to be a reusable rocket platform. With literally dozens of Falcon 9 rocket launches and lan...
DEC 13, 2019
Space & Astronomy
DEC 13, 2019
How Large Solar Storms Can Impact Earth's Power Grid
The Sun is a powerful ball of energy, and with that in mind, it should come as no surprise to anyone that it can sometimes become unstable. Over time, the...
DEC 13, 2019
Chemistry & Physics
DEC 13, 2019
Neutron Star Merger Fused Atomic Nuclei, Spilled Out Heavy Element
It is safe to say that we live in a world of hydrogen and helium, the lightest elements in the periodic table. Born minutes after the Big Bang, the two mak...
DEC 13, 2019
Space & Astronomy
DEC 13, 2019
Hayabusa-2 Departs Ryugu Asteroid to Return to Earth with Samples
It’s been just over a year since JAXA’s renowned Hayabusa-2 mission arrived at asteroid 162173 Ryugu to study the dynamics of the distant space...
DEC 13, 2019
Space & Astronomy
DEC 13, 2019
The Air Force's X-37B Plane Spent 780 Days in Space, But Why?
The United States Air Force regularly conducts top-secret missions and science experiments on behalf of the federal government. One of the military branch&...
DEC 13, 2019
Space & Astronomy
DEC 13, 2019
NASA's Parker Solar Probe Reveals Telling Clues About Our Sun
NASA’s Parker Solar Probe is currently the closest spacecraft to the Sun today. Being this close gives the spacecraft an unprecedented opportunity to...
Loading Comments...