The planet is about 30% larger than Earth and has much stronger surface gravity than our planet. Red dwarf stars lash out with ultraviolet and X-ray radiation that has the potential to demolish fragile layers of gas, leading scientists to question whether rocky planets orbiting them can maintain - or regain - atmospheres.Īstronomers observed a hot, rocky exoplanet called GJ 486 b using the Webb telescope. James Webb Space Telescope discovers its first exoplanet LHS 475 b is relatively close, 41 light-years away, in the constellation Octans.
Researchers will follow up this summer with additional observations with Webb, which they hope will allow them to definitively conclude if the planet has an atmosphere. The planet whips around its star in just two days, far faster than any planet in the Solar System. Based on new evidence from the NASA/ESA/CSA James Webb Space Telescope, this illustration reflects the conclusion that the exoplanet LHS 475 b is rocky and almost precisely the same size as Earth.
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