How would you like to see a star drop two magnitudes in the time it takes to eat dinner? Easy to do. Just check out one of these fast eclipsing binaries — they'll make your head spin.
The sky provides. This winter, the fading of Betelgeuse caught us all by surprise. Now, as January wraps up, we can add a new comet discovery and a supernova bright enough to see in a 6-inch telescope to an ever-growing list of seasonal sky wonders.
Quasars are among the brightest and most distant objects in the universe. Many are visible in amateur scopes if you know just where to look. We'll help you track them down.
In a rare move, a sleepy cataclysmic variable blows its top and suddenly becomes a nova.