For which object is the force of gravity greatest: Earth, Moon, or Sun?
The strength of gravity depends on two things. What are the two variables?
Telescopes are designed to collect a certain type of ______.
2. What fell on his head to help him discover this?
Need both answers correct
Most large telescopes use curved mirrors instead of curved lenses. A telescope that uses a curved mirror to concentrate light from a distance object is a ______.
1. The moon (revolves/rotates) around the earth.
2. The earth (revolves/rotates) around the sun.
3. The earth (revolves/rotates) on its axis.
Which is larger, umbra or penumbra?
On June 21st and December 21st, this happens causing the sun's light to shine directly on either the tropic of cancer or the tropic of capricorn.
The longer wavelengths enable THIS TELESCOPE to look much closer to the beginning of time and to hunt for the unobserved formation of the first galaxies
Uranus is tilted at 98 vs Earth which is tilted at 23.5 degrees. If you lived on Uranus, what would the seasons be like?