nuclear fusion

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17 08, 2017

Brown dwarf stars – Space science

By |2019-02-24T19:58:01-07:00August 17th, 2017|Physics|0 Comments

What a brown dwarf might look like up close What is a brown dwarf star? The very beginning of a star forming is a brown dwarf: a star that hasn't gotten enough mass together yet to begin nuclear fusion. More about nuclear fusion Different types of stars What are stars made of? All our physics articles [...]

2 06, 2017

What is uranium? Atoms, elements, chemistry

By |2018-04-16T23:49:23-07:00June 2nd, 2017|Chemistry, Physics|0 Comments

Diagram of a uranium atom Uranium is a rare atom, not just on Earth but also in space and on other planets. There is not very much uranium anywhere. That's because, like lead or gold, uranium only forms inside exploding supernovas. Because uranium atoms have so many protons and neutrons in them, they don't [...]

2 06, 2017

What is heat? Simple science – Chemistry

By |2019-08-06T22:18:09-07:00June 2nd, 2017|Chemistry, Physics|1 Comment

What is heat? A big campfire throws some serious heat Definition of heat When molecules of any kind of atoms get more energy in them than they had before, they move faster, and we call that "heat". When the molecules move faster, they hit against each other and bounce apart. So they end [...]