A quick look at Avi Loeb’s thoughts on NASA’s 3I/Atlas press event and the larger questions he believes remain open.

“Impact flashes on the moon are very common,” University of Colorado Boulder astrophysical and planetary sciences professor ...

A fast-moving object from outside our Solar System has captured global attention since it was first detected in July.

The planetarium turns 100 this year. What came before the giant domes, with imagery of galaxies, asteroids and meteors ...

It wasn’t easy, bringing the stars indoors. The first show, held in Germany in 1925, used grainy footage on a small dome, but was dizzying nonetheless. Now, a whole new future looms.