For the first time, astronomers have captured the brilliance of a superluminous supernova via gravitational lensing.

For generations, school posters have sorted the Solar System into tidy boxes: four small rocky planets near the Sun, two huge gas planets farther out, and, at the edge, a pair of “ice giants” – Uranus ...

A tightly orbiting planet in another star system is overturning long held ideas about what small, super heated worlds can keep around them. TOI 561 b circles its star in less than half a day and faces ...