Stephenson 2-18 Is NOT the Largest Star

Stephenson 2-18 isn't the largest star. Discover how big a star can really become, from the Sun to Rigel, Betelgeuse, Stephenson 2-18, and the mysterious and hypothetical quasi-stars. What is the largest star in the Universe? Is Stephenson 2-18 really the biggest star ever? And could theoretical objects known as quasi-stars have grown even larger? In this cinematic journey, we compare some of the largest stars ever known, beginning with Earth and the Sun before exploring Rigel, Betelgeuse, Stephenson 2-18, and finally one of the most fascinating theoretical objects in astrophysics: the quasi-star. You'll see what would happen if these enormous stars replaced our Sun, how they would transform the Solar System, and what the night sky might look like if a quasi-star were positioned just half a light-year from Earth. Unlike the stars shown earlier in this video, quasi-stars have never been observed. They are hypothetical objects predicted by theoretical models of the early Universe, and there is currently no direct evidence that they ever existed. Their appearance in this video is based on current scientific research and astrophysical simulations. From Earth to the edge of the Milky Way, this video explores just how big stars can become, and reminds us that even the largest stars may still be tiny compared to the scale of an entire galaxy. If you enjoy realistic space simulations, black holes, galaxies, stars, exoplanets and the true scale of the Universe, consider subscribing to Beyond the Rings for more cinematic journeys through the cosmos: www.youtube.com/@UCppyAe3EEAGcGknEr4C4H-A You may also like this: https://youtu.be/4WmR_pbB0Nk https://youtu.be/DFzEAleKwhU Or this: https://www.youtube.com/playlist?list=PLKQDRhWfXcTk1LhFhl2PA-_CYOpI5ouiL #stephenson218 #betelgeuse #hypergiantstars #astrophysics #astronomy #quasistars Credits: Space Engine Pro Universe Sandbox: https://universesandbox.com/ Advanced editing techniques Epidemic Sound Elevenlabs Beyond the Rings. All rights reserved. To get in touch with us: [email protected] Official website: https://btrings.com/