Astronomy is the study of space and the bodies in space (planets, moons, stars, comets, etc.)
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Scale & Earth's Solar System
It is hard to imagine the size of our galaxy. Our Sun is one star out of a billion in the Milky Way.
IT is even hard it imagine the vastness of our Solar System- our Sun and local planet system.
Earth's movement in space Notes & KEY
The moon orbits the Earth and has a number of effects on the Earth and our lives:
We use the moon's orbit to measure time:
The moon affects the oceans (and some rivers) on Earth;
The moon orbits the Earth at an angle, but sometimes, the Earth & Moon's shadows
cause eclipses on each other:
Black holes are an absolute expression of gravity. Use the videos to learn more about these amazing phenomena.
Comets are small celestial bodies that orbit around the Sun, similar to planets.Use the links to learn more about them.