Painless Tips to Help the Environment (w/ Paul Greenberg)
Curiosity Weekly
Warner Bros. Discovery
4.6 • 963 Ratings
🗓️ 15 June 2021
⏱️ 13 minutes
🧾️ Download transcript
Summary
Learn why there could be stars made of antimatter. Plus: author Paul Greenberg’s tips to reduce your carbon footprint.
There could be stars made of antimatter in our galaxy by Briana Brownell
- NASA - JSC Engineering - Alpha Magnetic Spectrometer. (2013). Nasa.gov. https://www.nasa.gov/centers/johnson/engineering/projects/alpha_magnetic_spectrometer/index.html
- may. (2017, April 19). Giant space magnet may have trapped antihelium, raising idea of lingering pools of antimatter in the cosmos. Science | AAAS. https://www.sciencemag.org/news/2017/04/giant-space-magnet-may-have-trapped-antihelium-raising-idea-lingering-pools-antimatter
- Dr Alfredo Carpineti. (2021, April 29). Where Antimatter Stars Are Located In The Milky Way (If They Actually Exist). IFLScience; IFLScience. https://www.iflscience.com/space/where-antimatter-stars-are-located-in-the-milky-way-if-they-actually-exist/
- Poulin, V., Salati, P., Cholis, I., Kamionkowski, M., & Silk, J. (2019). Where do the AMS-02 antihelium events come from? Physical Review D, 99(2). https://doi.org/10.1103/physrevd.99.023016
Additional resources from Paul Greenberg:
- Pick up "The Climate Diet: 50 Simple Ways to Trim Your Carbon Footprint" at your local bookstore: https://www.indiebound.org/book/9780593296769
- Website: https://www.paulgreenberg.org/
- Twitter: https://twitter.com/4fishgreenberg
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Transcript
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| 0:00.0 | Hi, you're about to get smarter in just a few minutes with Curiosity Daily from |
| 0:04.8 | Curiosity.com. I'm Cody Goff, and I'm Ashley Hamer. Today you learn why there could be |
| 0:09.5 | stars made of antimatter in our galaxy. Then author Paul Greenberg will share some simple |
| 0:15.2 | hassle-free changes you can make to help the environment. |
| 0:18.0 | Would satisfy some curiosity. |
| 0:20.0 | Scientists think it's possible that there are stars made of antimatter. |
| 0:27.0 | The key word here is possible. |
| 0:29.2 | We haven't found one for sure. |
| 0:31.6 | But scientists have recently identified 14 potential candidates. |
| 0:36.8 | As a refresher, antimatter is the same as regular matter, but its properties are reversed. |
| 0:43.2 | For example, an electron has a negative charge. |
| 0:46.6 | Its antiparticle, the positron, |
| 0:48.9 | has a positive charge. |
| 0:50.8 | So while stars like our sun fuse pairs of hydrogen atoms into helium atoms to release energy, |
| 0:56.7 | an antistar would fuse antihidrogen into antihhelium. |
| 1:01.5 | Because the fusion process that would turn anti-hydrogen into anti-helium would be so similar to the process most stars use, |
| 1:09.0 | anti-stars would look a lot like regular stars. |
| 1:13.0 | Except for one thing. |
| 1:15.3 | When matter and anti matter come into contact with one another, |
| 1:18.5 | they annihilate each other and produce gamma rays. |
| 1:22.3 | That means that, as regular particles of gas, dust, and ice float around the galaxy, |
| 1:27.0 | they'd annihilate the antimatter particles around the antistar |
... |
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