Scientists identify nearby 'super-Earth' as promising candidate in search for alien life - study

A nearby super-Earth exoplanet, GJ 3378 b, has emerged as a compelling candidate in the ongoing search for extraterrestrial life, according to a recent study published in The Astrophysics Journal. This exoplanet, discovered in 2024, is situated a mere 25 light-years from Earth, a relatively short distance within the vast Milky Way galaxy.

The study, led by researchers at the University of California, Irvine, analyzed GJ 3378 b and found it resides within its star's habitable zone. This region receives the optimal amount of solar radiation to potentially support liquid water. With a temperature hovering around 0°C and receiving 91% of the energy Earth gets from its sun, GJ 3378 b's conditions are considered highly favorable.

Scientists have also refined the exoplanet's mass to 2.3 times that of Earth, down from previous estimates. This revised measurement strengthens the possibility that GJ 3378 b is a rocky planet with an atmosphere similar to Earth's, further increasing its potential to harbor life. However, researchers caution that there is currently no direct evidence of an atmosphere or liquid water, and stellar winds could have eroded any existing atmosphere.

Future research endeavors, including NASA's planned Habitable Worlds Observatory mission set to launch in the 2040s, aim to image Earth-like planets and study GJ 3378 b more closely. These missions hope to confirm the presence of an atmosphere and search for biosignatures, advancing the quest to answer whether life exists beyond Earth.

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to image Earth-like planets around other sun-like stars