This app isn’t about to become a billion-dollar company. It can remember your collection, but only if you return to it using the same computer or phone. Someone without technical skills may struggle ...

The tiny nucleus of the comet (not visible) is surrounded by a bright halo of gas known as the coma. A long tail stretches away from the comet, and we see hints of rays, jets, streams and filaments.

Researchers from the Johns Hopkins Kimmel Cancer Center and The Johns Hopkins University have created a novel database structure that allows investigators anywhere to more easily study multiple types ...