I learned in October 2022’s Breakthrough that the spikes of stars in high-power photos are called diffraction spikes. Why do they appear as two crosses at 45 degrees to each other? The diffraction ...

Even though summer has long passed, one of its most interesting sky markers can still be seen in the evening sky of the Northern Hemisphere. The Summer Triangle, a striking pattern made of the stars ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Even stars aren't immune to spotty conditions, new research suggests. Scientists were studying a ...