The stars are surrounded by diffraction spikes, which are the starburst-like radiating lines that appear around bright ...

On April evenings, look to the west to spot the bright winter constellations of Orion, Gemini, Taurus, Auriga, Canis Major and Canis Minor. They’ll be gone soon, so check them out while you can.

When a Wisconsin shipyard won the contract to build a new class of Navy frigate in 2020, the project was meant to address an embarrassing reality: The U.S. is now the global laggard in building ...

A constellation of satellites orbiting 250 miles above Earth’s surface shows how solar and wind have taken off in recent years: Here’s what renewable energy sites looked like eight years ago.