Earth Science

Dark Matter

“MACHOs” are more popular than “WIMPs,” and therefore scientists know more about MACHOs than WIMPs.

Big Bang

After discovering that the universe was expanding, scientists concluded that the
universe must have started out as a smaller point.

Expansion of the Universe

Think of the expansion of the universe as an inflating balloon. As a balloon is inflated, it expands in all directions. The universe also expands in all directions.

Universe

Everything that exists in the world is unified inside the universe.

Milky Way

The Milky Way Galaxy looks different from other galaxies we have observed because we are viewing the Milky Way from within.

Galaxies

The Milky Way Galaxy is one of the many spiral galaxies in our universe.

Distance Between Stars

Using some geometry, can you understand how scientists might be able to use data to determine the distance between stars? What measurements are needed?

Life Cycle and Classification of Stars

Think of the flames coming from a stovetop. When they are getting warmer, its color will change from a dull red when it is cool into a blue

Star Power

A thermonuclear bomb reacts in the same way that a star produces energy; think about how much energy is released in both cases.

Star Constellations

Be careful not to confuse astronomy with astrology. Astronomy is the study of our universe, but astrology only deals with fortune-telling.

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