Ethan SiegelinStarts With A Bang!Physics heresy: projectiles don’t actually make parabolasTaught in every introductory physics class for centuries, the parabola is only an imperfect approximation for the true path of a…7h ago17h ago1
Ethan SiegelinStarts With A Bang!Inflation and dark matter are not like string theoryInflation, dark matter, and string theory are all proposed extensions to the prior consensus picture. But what does the evidence say?1d ago141d ago14
Ethan SiegelinStarts With A Bang!The one cosmic secret that demands a new particle colliderThe observation that everything we know is made out of matter and not antimatter is one of nature’s greatest puzzles. Will we ever solve…2d ago92d ago9
Ethan SiegelinStarts With A Bang!Ask Ethan: Why are inertial and gravitational mass equivalent?The mass that gravitates and the mass that resists motion are, somehow, the same mass. But even Einstein didn’t know why this is so.6d ago46d ago4
Ethan SiegelinStarts With A Bang!What do unexpected experimental results actually tell us?Scientific surprises, driven by experiment, are often how science advances. But more often than not, they’re just bad science.Sep 55Sep 55
Ethan SiegelinStarts With A Bang!Official verdict: JWST’s early galaxies didn’t break cosmologyThe “little red dots” were touted as being too massive, too early, for cosmology to explain. With new knowledge, everything adds up.Sep 46Sep 46
Ethan SiegelinStarts With A Bang!It’s important that weight and mass are not the sameHere on Earth, we commonly use terms like weight (in pounds) and mass (in kilograms) as though they’re interchangeable. They’re not.Sep 36Sep 36
Ethan SiegelinStarts With A Bang!7 unnecessary assumptions about life in the UniverseSo far, Earth is the only planet that we’re certain possesses active life processes. Here’s what we shouldn’t assume about life elsewhere.Sep 212Sep 212
Ethan SiegelinStarts With A Bang!Ask Ethan: Why don’t we feel the Universe’s expansion accelerating?The Universe isn’t just expansion, but the expansion itself is accelerating. So why can’t we feel it in any measurable way?Aug 306Aug 306
Ethan SiegelinStarts With A Bang!What is the origin of quantum uncertainty?No matter how good our measurement devices get, certain quantum properties always possess an inherent uncertainty. Can we figure out why?Aug 2912Aug 2912