Aging stars found to kill their planets, raising new questions for Earth’s future

When stars like the Sun run out of hydrogen in their cores, fusion slows and the outer layers balloon outward. The star can ...

Mini-Neptunes likely have hard surfaces, not magma oceans: James Webb telescope reveals

A new study using data from NASA's James Webb Space Telescope (JWST) has overturned long-held beliefs about mini-Neptune exoplanets. Earlier, scientists assumed these planets—smaller than Neptune but ...
Space.com

Aging stars destroy their planets more often than we thought: What does this mean for Earth?

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called ...

NASA's James Webb Space Telescope Telescope Challenges Old Theories on Mini-Neptune Worlds

According to the study, scientists had assumed that searing heat and thick gas layers would melt mini-Neptune crusts into ...
C&EN

Distant planets might form their own water

Experiments at high temperatures and pressures reveal chemistry that can generate water on the surface of exoplanets ...
Space.com

NASA's new Mars mission: These twin satellites could reveal how the Red Planet lost its atmosphere

Mars is about to receive a double dose of attention. This weekend, a pair of identical NASA satellites will launch together ...