Two Supernovae Hit Earth // Rogue Planets in Orion Nebula // A Star That Disappeared
A mind-bending JWST image of the Orion Nebula, filled with rogue planets. Seeing the cosmic web. An explanation for a massive star that just disappeared.
Watch the video here (with no ads) or on YouTube: https://youtu.be/lVQMBANcrQU
Two Supernovae Hit Earth // Rogue Planets in Orion Nebula // A Star That Disappeared (Vimeo)
Comments (12)
@Fraser. Firstly, love your work, secondly, long time listener. Okay, you asked for more questions: can you please provide more information about the Orion nebula from the latest jwst image? Specifically what the different cloud temperatures may contain/formed. More science behind the image we see. (b) Where in the image the rogue plants are located (I know they are too small to see on the image, but a distribution plot will be good to see how they are oriented wrt stars).
Interesting that in a core collapse type II supernova the rebounding mass does not have enough momentum on its own to unbind the star. It's the extraordinary neutrino flux that completes it!
The Orion image is nothing short of breathtaking, awe inspiring, and truly wonderful! Is it possible for large Jupiter type exoplanets to merge together? If so, would it be possible for two or more pairs to possibly merge and kick start the fusion process?
You need another 80 jupiters to reach fusion, that's all. :-)
I hear about solar sails being powered by local (earth or moon based) lasers. Once the sail gets some distance from the laser, doesn't this become very inefficient? Lasers are not perfectly collimated, and have some finite divergence, so after some distance, the sail is only hit by a small fraction of the laser beam, and you can no longer push it efficiently.
You only blast the sail in the beginning, while the laser is effective. Then it's coasting for the rest of the way.
You asked for more questions. One that’s been bugging me for a while: Will you help us understand solar sail fundamentals? If photons are massless, then how can they be used to push a spacecraft? How can photons have momentum when F=ma and m=0?? Thanks!
Photons don't have rest mass (which is not exactly the same as the regular definition of 'mass'). They do have momentum. You can also think of mass as a property of something that carries energy (here's a video on that https://www.youtube.com/watch?v=Xo232kyTsO0&t=4s&ab_channel=PBSSpaceTime). So, you can think of mass not as the reason of momentum, but the other way around. Hope it helps
You seem to be happier than usual in this one buddy ! Loved the video. And awesome video as always.
Oh great, I feel like it's normal, but I'm glad you enjoyed it.
Hi Fraser, this one is broken too.
We think we solved the problem. Try it now?