Ethan SiegelinStarts With A Bang!How the Solar System led planet-hunters astrayThe structure of our Solar System has been known for centuries. When we finally started finding exoplanets, they surprised everyone.6h ago16h ago1
Ethan SiegelinStarts With A Bang!The scientist’s 10 commandmentsThere are many things that separate science from ideology, politics, philosophy, or religion. Follow these 10 commandments to get it right.1d ago211d ago21
Ethan SiegelinStarts With A Bang!The epic race inside the Pillars of Creation is almost overThe last infant stars are finishing their formation inside these pillars of gas. The evaporation of those columns is almost complete.2d ago2d ago
Ethan SiegelinStarts With A Bang!Ask Ethan: Why is it darker during Winter than Summer?Sure, there’s less daylight during Winter than Summer, as your hemisphere is tilted away from the Sun. But darkness goes deeper than that.5d ago35d ago3
Ethan SiegelinStarts With A Bang!The only two “arrows of time” we have don’t matchOur thermodynamic arrow of time explains why the entropy of any isolated system always increases. But it can’t explain what we perceive.6d ago116d ago11
Ethan SiegelinStarts With A Bang!The mystery of the Moon’s two faces could soon be solvedThe near and far sides of the Moon are so different from each other, and no one is sure why. New lunar samples could confirm a wild theory.Jul 37Jul 37
Ethan SiegelinStarts With A Bang!Why JWST doesn’t have the same limits as HubbleAll telescopes are fundamentally limited in what they can see. JWST reveals more distant galaxies than Hubble, but still can’t see them…Jul 2Jul 2
Ethan SiegelinStarts With A Bang!The Universe’s “dark ages” were briefer than we imaginedThere was a time where no starlight was visible throughout the entire cosmos. That time was short-lived: shorter than astronomers imagined.Jul 12Jul 12
Ethan SiegelinStarts With A Bang!Ask Ethan: Could gravitational waves collapse into a black hole?Gravitational waves carry enormous amounts of energy, but spread out quickly once they leave the source. Could they ever create black…Jun 284Jun 284
Ethan SiegelinStarts With A Bang!How traveling back in time is permitted by Einstein’s physicsTraveling back in time is a staple of science fiction movies. But according to Einstein, it’s a physical possibility that’s truly allowed.Jun 2718Jun 2718