A familiar winter glow will soon return to the night sky, giving skywatchers a reason to bundle up and look east after sunset ...

The term “expanding universe” is often misunderstood, even by people familiar with astronomy. This explanation breaks down what actually expands and what does not, using modern cosmology rather than ...

Isar Aerospace's Spectrum rocket will lift off at 3 p.m. EST today (Jan. 21), if all goes according to plan. A German company ...