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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 [...]

What is a neutron? Atoms and Chemistry

By |2018-04-24T14:46:25+00:00June 2nd, 2017|Chemistry, Physics|

A neutron star (from NASA) A neutron is a tiny particle like a proton, smaller than an atom. Like protons, neutrons are too small to see, even with an electron microscope, but we know they must be there because that's the only way we can explain how atoms behave. All neutrons, everywhere in [...]