3I/ATLAS Update: Harvard Physicist Puzzled by Alien Comet's Striking Color Change — It Glows Green

Harvard physicist Avi Loeb is puzzled by the interstellar comet 3I/ATLAS after it turned a shocking green colour near the sun ...

How Do Astronomers Find Planets in Other Solar Systems?

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.