
A rocky planet called TOI-561 b completes an entire year in under 11 hours and orbits so close to its star that its surface is thought to contain a vast magma ocean. Its star is roughly 10 billion years old — twice the age of the Sun — yet after billions of years of extreme radiation, James Webb found compelling evidence that the planet still has a thick atmosphere.
Four Webb secondary eclipses showed TOI-561 b is far dimmer than bare lava should be, pointing to a volatile-rich atmosphere that moves heat and may exchange gases with magma.














