The type of information about space that is interesting to children includes the number and nature of the planets, the different objects in the universe and the size and nature of the sun. Children find it fascinating to... More »

www.reference.com Science Astronomy Universe

Nicolaus Copernicus was a Polish scientist who is credited with the early 16th-century discovery that the sun is the center of the universe and that Earth and several other planets orbit it. Copernicus' discovery, which ... More »

The solar system is a system in the universe that is comprised of the Sun, eight official planets, three dwarf planets and approximately 130 satellites of the planets, according to Nine Planets. Besides these bodies, the... More »

Johannes Kepler's theories of the universe were notable for hypothesizing that the universe was created on April 27, 4977 B.C. and that the planets orbit in an elliptical pattern rather than a circular pattern. His theor... More »

The universe contain galaxies, stars, black holes, planets, comets and meteors. In short, it holds all matter and energy. It also has a lot of empty space. It has around 80 billion galaxies or many large group of stars. ... More »

The nature of the universe can be described by universal and absolute physical laws. There are numerous laws that govern the universe, such as the laws of mechanics, thermodynamics, gases, conservation and relativity. More »

Ptolemy's model of the universe was geocentric, containing the Earth at the center with a series of circles, called deferents, moving outward from the Earth, containing the moon, Mercury, Venus, the sun, Mars, Jupiter an... More »