Results for “galaxies”
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Where’s the Best Place to Watch The ISS Deorbit? | Cosmic Queries #114
0:00I'm a little stunted, you know what I mean? Uh, all the other galaxies seem to have it together, man. I don't know if it's cuz I'm a spiral galaxy or sombrero0:09galaxy or There are galaxies that are very disturbed.0:12Those are the galaxies that are like, "You come near me, I'll kill you. You think you're going to collide with me?
"Man-Made Black Holes" CERN Physicist Warns of New Dark Matter Discovery | Daniel Whiteson
4:40that it's matter and it has mass because it's giving us gravity. Like we know that it's changing how galaxies rotate.4:47It changed how the universe, the structure of the universe formed. Like without dark matter, we wouldn't have galaxies right now. It's the mass of4:54dark matter that pulled together all the gas in the early universe to make galaxies. There wasn't dark matter, we'd just have like floating gas at this
Biggest Mysteries in Physics: Antimatter, Dark Energy & ToE - Don Lincoln | Lex Fridman Podcast #497
1:31:46She said, "How fast are galaxies rotating?" Cuz it's an easy thing to calculate. You can literally calculate that with high school physics and you2:05:23it's kind of neat. We can do this by counting the number of protons in the universe just looking at galaxies and so2:28:14relativity theory. Galaxies spin too fast. Clusters of galaxies move too quickly. And the distortion of very
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See all ›The origin of galaxies – Malcolm Longair 1990 Christmas Lectures 4/5
Supercomputer simulations demonstrate that gravitational interactions between galaxies create observed structures like tidal streams and elliptical galaxies from initial spiral collisions.summaryCosmic Microwave Background Constraint: The CMB is uniform to better than 1 part in 30,000, yet standard gravity would require large fluctuations (1 part in 1,000) to form galaxies by now; dark matter solves this by decotakeawayGalaxy Formation via Collapse: Galaxies form through a 'cosmic cycle' where massive stars (60 solar masses, 1 million year life) die quickly to recycle elements, while low-mass stars (<0.1 solar masses) cannot ignite fustakeaway
Interview: Dark Matter = Black Holes? | David Kaiser | Particles of Thought
Historical Evidence: Fritz Zwicky (1930s) first inferred dark matter from galaxy cluster velocities in the Coma cluster, noting galaxies moved faster than visible mass could bind. Vera Rubin (1970s) confirmed this with ftakeawayCMB Evidence: The Cosmic Microwave Background radiation reveals a specific ratio of dark matter to ordinary matter (approx 5:1) based on the pattern of temperature fluctuations (bumps and wiggles). This ratio is consistetakeawayModified Gravity Limitations: While Modified Newtonian Dynamics (MOND) can explain rotation curves in single galaxies, it fails to simultaneously explain the CMB power spectrum and large-scale structure formation withouttakeaway
Ask Neil Anything, January 2026 | Free Patreon Exclusive
Key scientific discussions involve potential glitches in the universe's programming (like cosmic ray cutoffs), the formation of galaxies via the James Webb Space Telescope, and the nature of dark energy and wormholes.summaryGalaxy Formation and JWST: The James Webb Space Telescope observes galaxies as they were in the past due to light travel time. Early-formed galaxies challenge timelines but do not necessarily require overlapping universetakeaway
