UNIVERSITY PARK, Pa., May 4 -- Pennsylvania State University issued the following news release:

UNIVERSITY PARK, Pa. - The surface of a distant rocky planet about 30% bigger than the Earth may resemble a larger version of the moon or the planet Mercury, according to a new study using NASA's James Webb Space Telescope (JWST). Researchers used JWST's ability to detect radiation in mid-infrared wavelengths, such as those that emanate from the planet's hot crust, to characterize the planet's surface. The results suggest that the planet has a rocky crust that probably has not had much recent tectonic activity.

A paper describing the results, by an international team of researchers including a Penn State astronomer, appeared today (May 4) in t...