Astronomers Find an Atmosphere on a Nearby Earthlike Planet
The New York Times • • general
Key Points:
- Astronomers have identified a rocky exoplanet named LHS 1140b, located a few dozen light-years away, that lies within its star's habitable zone, allowing for the potential presence of liquid water.
- New observations indicate that LHS 1140b has a helium-rich atmosphere, marking the first clear evidence of a potentially habitable rocky planet with an atmosphere.
- The presence of an atmosphere is crucial for habitability as it helps retain water, regulate climate, and protect the surface from space radiation, addressing previous uncertainties about rocky planets retaining atmospheres.
- While no evidence of life has been found on LHS 1140b, scientists view this discovery as promising and indicative of a broader population of Earth-like exoplanets that could sustain life.
