Exoplanet evolution? Mini-Neptunes may shed their atmospheres and become super-Earths

New research suggests that stellar radiation is stripping away the “fluffy” atmospheres of exoplanets slightly smaller than Neptune, leaving behind their rocky cores and transforming them into worlds more closely resembling Earth.  In the 1990s, astronomers confirmed the existence of planets outside the solar system. Known as exoplanets, they are one of the most fascinating … Read more

NASA hopes James Webb Space Telescope will unlock secrets of ‘super-Earths’ and hot rocky worlds

Some of the first James Webb Space Telescope investigations will focus on a variety of planet very different from what’s found in our cosmic neighborhood. Once Webb finishes its six-month commissioning period around June, it is scheduled to start a series of studies in exoplanets. One such project will study 11 “super-Earths,” which are worlds … Read more

Super-Earths: Long-lasting radiation shields may make for life-friendly worlds

Life on Earth is made possible by our planet’s magnetosphere – an invisible radiation shield that protects the surface – now it turns out that super-Earths could have magnetospheres too Space 13 January 2022 By Alex Wilkins The laser system at the National Ignition Facility in California used to study iron’s properties Damien Jemison The … Read more