Astronomers from Columbia University discovered a potential exomoon twice the size of our planet. It revolves around an exoplanet that has a mass similar to Jupiter.
Following the resolution of a pair of difficulties by ground controllers, NASA's massive new space telescope is performing well more than a week after launch.
James Webb Space Telescope successfully deployed its gimbaled antenna assembly on December 26, one day after its Christmas launch from French Guiana spaceport.