Description: What happens when you swap our sun for some of the universe's most extreme objects? From a super-hot Blue Giant to a tiny, dense Neutron Star, the results are wild. Find out why our sun is perfect for Earth and what would happen if we swapped it for a black hole with the same mass.#blackhole #sun #solarsystem #whatif #astronomy #gravity #physics #earthorbit #eventhorizon #spaceexplained