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mating and reproduction in animals

Mating ... read more

10 cool things we learned this month

1. Primates like to get tipsy ... read more

the solar system

A solar system is a group of planets and one or more stars. Our solar system has just one gigantic star, the Sun. It also has eight planets and three dwarf planets. Many planets have their own moons. There are also thousands of asteroids, meteoroids, and comets. Gravity from our huge Sun holds the sol... read more

galaxies

A galaxy is a system of dust, gas, and stars that collects over a very large area. Gravity binds the objects in a galaxy together. Within each galaxy are billions of stars. ... read more

how corsets worked

The style craze that deformed bones and distorted bodies – all in the name of fashion. ... read more