A new study reveals that the risk of satellite collisions in low-Earth orbit is alarmingly high, with a catastrophic event potentially occurring within days if collision-avoidance systems fail.
posted on 12/17/2025
A binary star system is set to collide, creating a supernova so bright that it will be visible from Earth, even during the day. Learn more about this spectacular event.
posted on 12/14/2025
Two galaxy clusters, 2.8 billion light-years away, are on a collision course for a second time, a billion years after their first encounter.
posted on 06/08/2025