Not all scars are created equal. That's the conclusion of a new study by Weizmann Institute of Science researchers: They found that two distinct types of scars, referred to as "hot" and "cold," can ...

The Milky Way’s central black hole, Sagittarius A*, is an unstoppable cosmic firework show, flaring with wild bursts of energy that seem to have no pattern. Using the James Webb Space Telescope, ...