Simply put, a black hole is a region of space-time where gravity is so strong that nothing can escape from it. This includes light, which travels at the cosmic speed limit of 186,000 miles per second.

I want to start this course with a brief review of the history of gravitational astronomy, starting from the Eta Carinae supernova of 2009. You will be in mid-career when the shock front hits, and a ...

“Even today, the most jaded city dweller can be unexpectedly moved upon encountering a clear night sky studded with thousands of twinkling stars,” he wrote in his book “Pale Blue Dot: A Vision of the ...

Years ago, astronomy professors started noticing something that troubled them: Many of their students didn't understand climate change and the... Why Astronomy 101 is 'perfect' for teaching climate ...

Our solar system has been out there for 4.6 billion years, but it seems more people than ever are becoming seduced by its beauty and mystery. Predictable celestial events such as lunar eclipses, ...

Before astronomy students at Columbia University can learn about about the sun, moon, and stars, they’ll have to take a refresher on … the “genocide” at Gaza? That’s the message from an undergraduate ...