Recent content by DavidCummings
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Undergrad Did James Webb cast serious doubt on the Big Bang?
If you read articles like The James Webb Space Telescope prompts a rethink of how galaxies form you see that recent images of early galaxies have thrown some doubt on theories of how galaxies have formed and when they started forming. But if you read about the JWST in the popular media -- and...- DavidCummings
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- Formation Galaxies Observable universe
- Replies: 15
- Forum: Cosmology
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Undergrad Strange radio signal from Proxima Centauri
Thanks for bringing up the points about modulation and drift. That's interesting.- DavidCummings
- Post #4
- Forum: Astronomy and Astrophysics
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Undergrad Strange radio signal from Proxima Centauri
https://www.scientificamerican.com/article/alien-hunters-discover-mysterious-signal-from-proxima-centauri/?fbclid=IwAR0HOFRU-cvFaU66Wbqql-hoo91hA1WnCl9Azwqa84ly-zS6cjBiDFzlK8o Excerpt: Most curiously, it occupies a very narrow band of the radio spectrum: 982 megahertz, specifically, which is a...- DavidCummings
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- Radio Radio signal Signal Strange
- Replies: 14
- Forum: Astronomy and Astrophysics
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Undergrad Can S5-HVS1 Retain Its Planets?
"Astronomers have spotted an ultrafast star [S5-HVS1], traveling at a blistering 6 million km/h, that was ejected by the supermassive black hole at the heart at the Milky Way five million years ago." -- https://www.sciencedaily.com/releases/2019/11/191112110238.htm If this star had planets 5...- DavidCummings
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- Planets
- Replies: 2
- Forum: Astronomy and Astrophysics
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Undergrad Does the newly measured expansion rate change the odds for Big Rip?
Is the likelihood (or unlikelihood) of a Big Rip changed by the new findings of faster universe expansion (https://www.sciencedaily.com/releases/2019/04/190425104128.htm). In https://www.physicsforums.com/threads/will-the-big-rip-basically-be-the-big-bang-for-the-next-universe.971039/, phinds...- DavidCummings
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- Big rip Change Expansion Expansion rate Rate Rip
- Replies: 2
- Forum: Cosmology