Watch for Mercury before sunup, the bright planet Jupiter will be nearby. Mercury reaches greatest elongation on May 29. It's best from the Southern Hemisphere.
What's a safe distance from a supernova? To survive a supernova, recent data says Earth would have to be at least 160 light-years away from the exploding star.
Astronomer Guy Ottewell uses 2 charts - showing 2 different volumes of space - to contemplate and question the density of red dwarf stars in our Milky Way.
What are sky measurements - or distances - in the night sky? Here's what it means for objects to be several degrees (or arcminutes or arcseconds) apart.
A penumbral lunar eclipse happens tonight, May 5-6, 2023. It's visible from eastern Europe, Africa, Asia, Australia, New Zealand, Antarctica and Indonesia.
Mars is still bright, but it's destined to fade in brightness and appear for fewer hours each night. See Mars while you can! Charts for May and June 2023 here.