Group 1 Stars

stars

What are stars?

a star is a big, bright ball of gas that's held together by gravity.l It's just like our sun, but a lot further away, in fact the closest star (apart from our sun) is Proxima Centauri which is 4.2 light years (4.0×1013 km)
A light year is the distance light travels in a year (around 10 trillion kilometres). Proxima Centauri is a dwarf star that was discovered in 1915 by Robert Innes.
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why do stars shine?

Stars shine because they are hot. They're hot because there fusing hydrogen atoms together to make helium, which gives off loads of energy.
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