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 ...

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 ...

Sky Shorts author says Orion a favorite constellation, and shares key details to find and appreciate its beauty.