It’s Never Been a Better Time to Look Up

Things have been tumultuous lately on Earth. Donald Trump will soon be sworn in as U.S. president, wars are raging, and ecosystems are at risk of collapsing. Many aspects of life feel unpredictable.Powered by...

Astronomy & Astrophysics 101: What Is a Light-Year?

Year? A light-year is the distance light travels in one year. Light moves incredibly fast — about 186,000 miles (300,000 kilometers) per second, covering 5.88 trillion miles (9.46 trillion kilometers) …Powered by...