How to tell a planet from a star @Cosmos

Cosmos:elementary | How to tell a planet from a star @Cosmos_elementary | Uploaded January 2023 | Updated October 2024, 8 hours ago.
Planets and stars may look similar in the sky, but there is an easy way to tell them apart without telescopes or special apps.

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$Myths and misconceptions about the speed of light There are lots of Myths and misconceptions about the speed of light, and I’m going to cover several of them in this video. Veritasium video https://www.youtube.com/watch?v=pTn6Ewhb27k PBS Space time on Speed of Causality https://www.youtube.com/watch?v=msVuCEs8Ydo Tom Scott’s video https://www.youtube.com/watch?v=tozuzV5YZ7U Sources: Speed of https://www.forbes.com/sites/quora/2018/07/02/does-anything-other-than-light-travel-at-the-speed-of-light Speed of gravity https://www.sciencealert.com/speed-of-gravitational-waves-and-light-same Sean M. Carroll’s interview https://www.youtube.com/watch?v=fOeLjD-dZjc Graviton http://curious.astro.cornell.edu/physics/137-physics/general-physics/particles-and-quantum-physics/813-what-is-a-graviton-intermediate Neutrinos and supernovae https://physicsworld.com/a/new-correction-to-speed-of-light-could-explain-sn1987-neutrino-burst/ Speed of causality https://www.forbes.com/sites/jillianscudder/2016/06/24/is-cause-effect-limited-by-the-speed-of-light/?sh=514116221a58 https://www.sciencealert.com/watch-why-the-speed-of-light-is-not-about-light Why it slows down https://moviesandscience.com/blog/science/refractive-index http://curious.astro.cornell.edu/about-us/133-physics/general-physics/general-questions/832-is-the-speed-of-light-constant-beginner Polariton https://www.sciencedirect.com/topics/chemistry/polariton https://mappingignorance.org/2018/01/25/what-on-earth-is-a-polariton/ https://www.nature.com/subjects/polaritons Freezing of light https://www.sciencedaily.com/releases/2013/08/130806111151.htm https://physics.aps.org/articles/v6/80 https://physics.aps.org/articles/v10/s25 Speed limit https://www.forbes.com/sites/startswithabang/2018/10/09/the-universe-has-a-speed-limit-and-it-isnt-the-speed-of-light/?sh=a782bac75549 How to measure it https://arxiv.org/pdf/2012.12037.pdf https://www.universetoday.com/149554/theres-no-way-to-measure-the-speed-of-light-in-a-single-direction/ https://arxiv.org/ftp/arxiv/papers/1011/1011.1318.pdf https://users.physics.ox.ac.uk/~rtaylor/teaching/specrel.pdf https://link.springer.com/article/10.1007/s10701-020-00337-5 https://link.springer.com/article/10.1140/epjd/e2012-20524-8 https://arxiv.org/pdf/1212.2259.pdf https://arxiv.org/pdf/1310.1171.pdf https://arxiv.org/pdf/0911.3616.pdf https://aapt.scitation.org/doi/10.1119/1.3160665 https://www.scienceabc.com/pure-sciences/could-what-we-consider-as-the-speed-of-light-be-wrong.html https://spaceaustralia.com/news/one-way-speed-light https://plato.stanford.edu/entries/spacetime-convensimul/ https://link.springer.com/article/10.1007/s12648-012-0112-4 Galaxy distortions https://sites.ualberta.ca/~pogosyan/teaching/ASTRO_122/lect24/lecture24.html https://www.universetoday.com/21998/the-diameter-of-the-milky-way/ https://astronomy.stackexchange.com/questions/43739/how-distorted-will-our-galaxy-be-if-we-are-viewing-it-from-several-thousand-ligh$

The end of our Galaxy #science #space #cosmos_elementary

What if the black hole dissapeared from the galactic center?

The biggest scam in the history of space exploration? / Mars One