Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.
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Perihelion: What is it and when does it occur?
Perihelion is the point at which an orbiting body is closest to the sun. The word comes from Greek and literally means around (peri) the sun (helios).
The interstellar comet 3I/ATLAS will make its closest approach to Earth on December 19, and will be visible with binoculars ...
Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?
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