This Newly Found Exoplanet Is So Light, Scientists Don’t Know What It’s Made Of

Astronomers discover a super-Earth and a sub-Neptune 250 light years away from our solar system. These planets offer a glimpse into planetary types missing from our own solar system but common in the galaxy. Using NASA’s TESS and HARPS-N, researchers measured their orbits, masses, and densities, revealing intriguing details about their compositions. TOI-1453 c’s lightweight [...]