Stars and Galaxies
Galaxies contain billions of stars. Do galaxies collide? Do the stars within them collide?
Galaxies contain billions of stars. Do galaxies collide? Do the stars within them collide?
One of astronomy’s first tools to measure the flow of time, a sundial is simply a stick that casts a
Each student becomes the “ambassador” for a planet and prepares by researching their planet, then meets with other ambassadors to
Does the Moon always look the same? Does its surface look different at different times?
Use an entire class to model motions of objects in the solar system with respect to the stars. Don’t forget to
Everyone and everything has a shadow. Shadows illustrate how three-dimensional objects can be viewed in two dimensions.
The Sun is a huge sphere of gas. The visible layer of the Sun, which we view as the surface,
Stretching across the dark night sky, not easily visible when the Moon is in the sky, is a faint irregular
Without being informed of the expected product, the students will make a Play-doh model of the Earth-Moon system, scaled to
Planning to take a vacation soon? Visit Phobos! Small and cozy, Phobos orbits the fourth planet from the Sun in