Nebulae are interstellar clouds of gas and dust, initially mistaken for galaxies by early astronomers. Diffuse nebulae lack defined shapes and include reflection nebulae (reflecting starlight), ...

A supernova is an incredibly energetic stellar explosion. The name arises from the brightness of these blasts, which makes it look like a “new” star has appeared in the heavens. After astronomer Tycho ...

“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 ...

Planetary Society and California State University Dominguez Hills Team Up on Distance Learning Beginning Monday, February 7, a 13-week astronomy and planetary science course sponsored by The Planetary ...

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 ...

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, ...

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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 ...