Stars & 7th Grade and Up
Stars are classified by their spectra (the elements that they absorb) and their temperature.
Learn about nuclear fusion, an atomic reaction that fuels stars as they act like nuclear reactors!
Learn about how a star dies in this Astronomy information page.
Learn about the life cycle of a star with this helpful diagram.
Spiral galaxies are galaxies with a central, dense area and spiraling arms (which are often sites of star formation).
A galaxy is a huge group of stars, dust, gas, and other celestial bodies bound together by gravitational forces. Learn more...
There are 12 constellations in the Zodiac, learn about them here!
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