Ethan SiegelinStarts With A Bang!Starts With A Bang Podcast #105 — Dark Matter and GalaxiesWe normally think of dark matter as the “glue” that holds galaxies and larger structures together. But it’s so much more than that.·2 min read·6 hours ago--1
Ethan SiegelinStarts With A Bang!Does the Universe expand by stretching or creating space?The evidence that the Universe is expanding is overwhelming. But how? By stretching the existing space, or by creating new space itself?·12 min read·2 days ago--12
Ethan SiegelinStarts With A Bang!Black holes are common. So where are the white holes?In General Relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?·11 min read·May 9, 2024--21--21
SpaceWhy Norwegians Don’t Look at the Northern Lights?The Northern Lights, a rare and exclusive natural wonder, grace only small areas around the poles of our planet. Regular sightings are a…·3 min read·5 hours ago----
Avi LoebThe Colorful Mass Loss of the SunOver the past week, the sky over Boston lit up in beautiful aurora colors as a result of the excitation of atomic oxygen (red and green)…4 min read·3 days ago--5--5
Ethan SiegelinStarts With A Bang!Starts With A Bang Podcast #105 — Dark Matter and GalaxiesWe normally think of dark matter as the “glue” that holds galaxies and larger structures together. But it’s so much more than that.·2 min read·6 hours ago--1
Ethan SiegelinStarts With A Bang!Does the Universe expand by stretching or creating space?The evidence that the Universe is expanding is overwhelming. But how? By stretching the existing space, or by creating new space itself?·12 min read·2 days ago--12
Ethan SiegelinStarts With A Bang!Black holes are common. So where are the white holes?In General Relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?·11 min read·May 9, 2024--21
SpaceWhy Norwegians Don’t Look at the Northern Lights?The Northern Lights, a rare and exclusive natural wonder, grace only small areas around the poles of our planet. Regular sightings are a…·3 min read·5 hours ago--
Avi LoebThe Colorful Mass Loss of the SunOver the past week, the sky over Boston lit up in beautiful aurora colors as a result of the excitation of atomic oxygen (red and green)…4 min read·3 days ago--5
Ethan SiegelinStarts With A Bang!Our best idea for the “origin of gold” doesn’t add upIn 2017, we detected gold being forged in a neutron star-neutron star merger. Now, in 2024, the amounts created simply don’t add up.·11 min read·3 days ago--6
MoonbornWhy Can’t Planets Be Perfectly Round?Recently, I stumbled upon an article claiming that planets aren’t perfectly round. The catchy title made me think it was another “flat…3 min read·10 hours ago--
John Kruse MD, PhDinAha!Why the Night Sky is Not Inky Black (Sorry, Poets)Atmospheric scattering sheds light on a variety of strange phenomena·6 min read·2 days ago--2