Exoplanet LH 475b has a radius about 99 percent the size of Earth’s, but that rocky radius is surrounded by either a choking atmosphere of carbon dioxide — or the vacuum of space, according to recent observations with the James Webb Space Telescope (JWST). But it’s definitely a planet, and that’s something astronomers couldn’t say for sure until now.
Astronomer Jacob Lustig-Yeager, of the Johns Hopkins University Applied Physics Laboratory, presented their work at the 241st meeting of the American Astronomical Society.
Comments are closed.