Sirius’ brightness is also helped by its size, nearly 1.5 million miles in diameter. Our sun isn’t even a million miles across. Meanwhile, Arcturus, the star of summer, is on the rise in the ...

April 21 - 28 is International Dark Sky Week, a global celebration of the night sky during which like-minded organizations ...

At 41 degrees south latitude, you would see seasonal changes of all of the southern hemisphere stars. The circumpolar ...

May 2025 is a prime time to explore the night sky, with Vesta taking center stage. Use our sky map to navigate the stars and planets, and don't miss the chance to observe this giant asteroid. Share ...

The past two weeks were almost entirely cloudy. Behind the clouds, we missed many beautiful events involving the moon, ...

Schaefer has studied the light curve, or brightness, of T Coronae Borealis ... look for the Hercules constellation between the bright Vega and Arcturus stars. Next to Hercules is a crown-shaped ...