TRAPPIST-1 b: We give it a one (M-dwarf) star review; it lacks atmosphere. ⭐

Webb found the dayside temperature of this rocky exoplanet to be about 450º F (227º C) — suggesting it has no significant atmosphere: go.nasa.gov/3K9cS4g

Here’s why this is a big deal ⬇️
#JamesWebb

NASA’s Webb Measures the Temperature of a Rocky Exoplanet

An international team of researchers has used NASA’s James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b.

^{Jessica Evans (NASA)}