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Bad Astronomy | Neutrinos play a huge role in exploding stars


Stars generate energy in their cores, fusing lighter elements into heavier ones. This is how a star prevents its own gravity from making it collapse; the heat generated inflates the star, creating pressure that holds it up.
The most massive stars take this energy production process to the extreme; while lower mass stars like the Sun stop after fusing helium into carbon and oxygen, massive stars continue on, fusing elements all the way up to iron.
However, once a mighty star s core is iron, a series of events takes place that actually removes energy from the core, allowing gravity to dominate. The core collapses, setting up a huge blast of energy that is so immense it blows away the outer layers of the star, creating an explosion we call a supernova. ....

United States , A Loll Arizona State University , Crab Nebula , Hubble Space , Arizona State University , High Mass Stars , Crash Course Astronomy , Bad Astronomy , Quantum Mechanics , ஒன்றுபட்டது மாநிலங்களில் , நண்டு நெபுலா , ஹப்பிள் இடம் , அரிசோனா நிலை பல்கலைக்கழகம் , உயர் நிறை நட்சத்திரங்கள் , செயலிழப்பு நிச்சயமாக வானியல் , மோசமான வானியல் , குவாண்டம் இயக்கவியல் ,

January 2021 movie preview: The Marksman, MLK/FBI, Little Things, and more


Photo: Vertical Entertainment
Chloë Grace Moretz fights off fighter planes and CGI gremlins in the fun, pulpy WWII dogfight movie
Shadow In The Cloud (select theaters, VOD, and digital platforms 1/1). The military action continues with
Redemption Day (select theaters 1/8; VOD and digital platforms 1/12), about a marine, played by Gary Dourdan, who infiltrates a terrorist cell to save his wife. Meagan Good steps in front of and behind the camera for the drama
If Not Now, When? (VOD and digital platforms 1/8), about a group of estranged high school friends reunited through tragedy. Based on the book by Naoki Higashida,
The Reason I Jump (virtual theaters 1/8) looks at the lives of five young nonspeaking autistic people from around the world. ....

Notting Hill , Kensington And Chelsea , United Kingdom , United States , Simon Stone , Saudi Arabia , Yuba County , Simon West , John Lee Hancock , Darren Aronofsky , Bryan Fogel , Casey Affleck , Jedidiah Goodacre , Jacki Weaver , Gary Dourdan , Lily James , Jamal Khashoggi , Jessica Chastain , Aravind Adiga , Tate Taylor , Mila Kunis , Frank Grillo , Finley Sinclair Rose Reid , Jared Leto , Carey Mulligan , Dror Moreh ,

Our Galaxy Has a Shocking Array of Really Weird Stars. Here's Your Ultimate Guide


2 JANUARY 2021
You know how stars do. They re out there, doing their thing, fusing a whole bunch of hydrogen into helium, shining up the joint.
But some stars are just a little bit different from the norm. Not content with simply lighting up the night sky like a giant disco, they zoom, shimmer, dim and even hang around seeming to be older than the actual Universe. These are our galaxy s oddballs, and we love each and every one.
 
Need for speed: PSR J0002+6216
(J. English/University of Manitoba/NRAO/F. Schinzel et al./DRAO/Canadian Galactic Plane Survey/NASA/IRAS)
We re not sure where the star named PSR J0002+6216 is headed, but we know it s heading there fast. It s travelling at the absolutely breakneck speed of 1,130 kilometres per second (700 miles per second). That could take it from Earth to the Moon in six minutes. ....

Tabetha Boyajian , Nahks Trehnl , Yale University , Canadian Galactic Plane Survey , Canadian Galactic Plane , Milky Way , Nahks Tr Ehnl , Penn State , Ancient One , Alien Megastructure , Giant Wotsit , Magnetic Zombie , Shouldnt Exist , யேல் பல்கலைக்கழகம் , கனடியன் விண்மீன் விமானம் கணக்கெடுப்பு , கனடியன் விண்மீன் விமானம் , பால் வழி , பென் நிலை , பண்டைய ஒன்று , அன்னிய மெகாஸ்ட்ரக்சர் , காந்த ஸாஂபீ ,