Sunlight, through a mechanism separate than vitamin D production, energizes T cells that play a central role in human immunity, researchers have found.
A distant planet orbiting two stars, found by its warping of spacetime, has been confirmed using observations from the NASA/ESA Hubble Space Telescope.
This composite image, made from ten frames, shows the International Space Station, with a crew of six onboard, in silhouette as it transits the sun at roughly five miles per second.
An international team of scientists, including researchers from the University of Chicago, has made the rare discovery of a planetary system with a host star similar to Earth's sun.
Planet Nine the undiscovered planet at the edge of the solar system appears to be responsible for the unusual tilt of the Sun, according to a new study.