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.3d ago43d 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.4d ago54d ago5
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.5d ago65d ago6
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.6d ago56d ago5
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 2913Aug 2913
Ethan SiegelinStarts With A Bang!Why haven’t we detected a signal from intelligent aliens yet?Life arose on Earth early on, eventually giving rise to us: intelligent and technologically advanced. “First contact” still remains…Aug 2817Aug 2817
Ethan SiegelinStarts With A Bang!How far away are we from the location of the Big Bang?If you think of the Big Bang as an explosion, we can trace it back to a single point-of-origin. But what if it happened everywhere at once?Aug 273Aug 273
Ethan SiegelinStarts With A Bang!Why do we count the Universe’s age from 13.8 billion years ago?The Universe is 13.8 billion years old, going back to the hot Big Bang. But was that truly the beginning, and is that truly its age?Aug 262Aug 262