Ethan SiegelinStarts With A Bang!Astronomers near a complete picture for how planets formNewborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?·11 min read·21 hours ago----
Ethan SiegelinStarts With A Bang!RIP Apollo 8 astronaut Bill Anders, who rediscovered EarthIn December of 1968, human beings made their first-ever journey to the Moon aboard Apollo 8. Their most important discovery? Planet Earth.·3 min read·1 day ago--1--1
Ethan SiegelinStarts With A Bang!Starts With A Bang podcast #106 — the troublesome hunt for Planet NineOut beyond Neptune are some fascinating bodies left over from our Solar System’s formation. Could one of them truly be spectacular?·2 min read·3 days ago----
Ethan SiegelinStarts With A Bang!Ask Ethan: Why do matter and antimatter annihilate?From forming bound states to normal scattering, many possibilities abound for matter-antimatter interactions. So why do they annihilate?·11 min read·4 days ago--7--7
Ethan SiegelinStarts With A Bang!No, gain of function research did not cause COVID-19SARS-CoV-2 first emerged in humans in 2019. Despite much noise generated by lab leak proponents, the evidence indicates a natural origin.·13 min read·5 days ago--20--20
Ethan SiegelinStarts With A Bang!2024’s summer solstice is Earth’s earliest since 1796On June 20, 2024, the summer solstice occurs at its earliest moment since 1796: when George Washington was President of the USA. Here’s…·11 min read·6 days ago--6--6
Ethan SiegelinStarts With A Bang!No, new measurements can’t relax the Hubble tensionThere are two different ways to measure the expansion rate of the Universe, and they don’t agree. And no, new measurements don’t help.·11 min read·Jun 11, 2024--5--5
Ethan SiegelinStarts With A Bang!5 big lessons from JWST’s new record-setting galaxyA new all-time record! JWST’s discovery of JADES-GS-z14–0 pushes the earliest galaxy ever seen to just 290 million years after the Big…·3 min read·Jun 10, 2024--1--1
Ethan SiegelinStarts With A Bang!Ask Ethan: Why didn’t the Big Bang become a black hole?If you bring too much mass or energy together in one location, you’ll inevitably create a black hole. So why didn’t the Big Bang become…·11 min read·Jun 7, 2024--4--4
Ethan SiegelinStarts With A Bang!Is the “Methuselah star” really older than the Universe?The Universe is precisely dated at 13.8 billion years old, but astronomers claim the Methuselah star is 14.5 billion years old. What gives?·14 min read·Jun 6, 2024--6--6