Neutron Stars
Ordinary matter, or the stuff we and everything around us is made of, consists largely of empty space. Even a rock is mostly empty space. This is because matter is made of atoms. An atom is a cloud of electrons orbiting around a nucleus composed of protons and…
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Geology
Is The Sea Really On The Level?
When we measure the height of mountains, we measure from a constant number called sea level. For instance…
Mathematics
How To Calculate The Area Of A Right Cone
The cone is another three-dimensional shape based on the circle. You could think of it as the cross between a…
Astronomy
Light Fantastic
On the next hot summer day, imagine what would happen if the Sun suddenly became one million times brighter.…
Astronomy
Sibling Rivalry: A Mars/Earth Comparison
Scientific understanding is often a matter of making the right comparisons. In terms of studying the Earth,…