Two Types of Supernovae A supernova is an explosion of a massive giant star. This is a vast explosion where the whole star is blown up. It can shine up to 10 billion stars bright, making them extremely bright. Supernovae are so faint that it is hard for even the largest telescopes to see them. This is because they are not observed to be in elliptical galaxies. Supernovae are classified as type I or II depending …
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