Nearby rocky planet may be replenishing helium from atmosphere, study finds

Nature NewsIndependentCenter12 hr. ago

Scientists have identified a rocky exoplanet named LHS 1140b that likely possesses an atmosphere, potentially making it a candidate for hosting life. The discovery, based on observations of helium escaping from the planet's upper atmosphere, supports earlier theories that small, rocky planets can retain atmospheres. LHS 1140b resides in the 'habitable zone' around its red-dwarf star, where conditions might allow for liquid water. While the presence of water and the exact composition of the inner atmosphere remain unconfirmed, the findings represent a significant step toward understanding whether rocky exoplanets can sustain atmospheres. Researchers plan to replicate these observations to validate the results.

Bias read (Center): The article discusses scientific research on an exoplanet and does not involve political figures, policies, or contentious issues. It presents findings objectively without apparent bias.

Phys.orgIndependentCenter18 hr. ago

A new study suggests that the rocky exoplanet LHS 1140b, located 40 light-years away, may be replenishing its helium from its atmosphere, indicating the presence of an atmosphere. Discovered in 2016 by University of Florida astronomer Jason Dittmann, the planet orbits a low-mass star and is considered a candidate for hosting life due to its position in the habitable zone. Researchers used data from the Magellan Clay telescope in Chile to observe helium escaping from the planet, suggesting atmospheric activity. Unlike other rocky exoplanets that have lost their atmospheres, LHS 1140b appears to maintain some level of atmospheric replenishment, possibly due to X-ray radiation interactions. This finding challenges previous assumptions about the rarity of atmospheres on rocky planets and highlights the importance of studying such objects around smaller stars.

Bias read (Center): The article presents scientific findings without overt ideological framing. It focuses on astronomical research, methodology, and observational data, with no indication of political bias or advocacy for specific policies or ideologies.