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Supernova – Space – Astronomy

By |2018-05-31T11:49:31+00:00August 19th, 2017|Physics|

Supernova from space (thanks to NASA and the Hubble Telescope) What is a supernova? Supernovas are exploding stars. Red giant stars explode when they have used up their hydrogen and helium fuel, and converted most of their atoms to iron atoms. A red giant star explodes Red giant stars have a lot of gravity pulling them inward. Normally they don't collapse inward because the nuclear [...]

Different types of stars – Astronomy – Space

By |2018-05-31T11:49:31+00:00August 19th, 2017|Physics|

The Eagle Nebula Stars don't last forever, though they do last for billions of years. And they don't stay the same throughout their existence - they change over time. The earliest beginning of a star is called a nebula. A nebula is a cloud of hydrogen and a few helium atoms hanging in space. Sometimes a nebula just [...]