Which is the longest surviving, and most successful, space telescope?
a. SOFIA
b. Chandra
c. Kepler Space Observatory
d. Hubble Space Telescope
e. James Webb Space Telescope
d
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Earth sends out more signals into space by accident than with intent
a. True b. False Indicate whether the statement is true or false
Which of the following is thought to explain why Venus has so much more atmospheric gas than Earth?
A) Most of the gases that have been released from volcanoes on Earth later returned to the surface. B) Venus has gained much more gas through outgassing than has Earth. C) Because of its lack of magnetic field, Venus has been able to gain gas through the impacts of solar wind particles, while Earth has not gained gas in this way. D) Earth has lost much more gas to thermal escape than has Venus.
Spherical Mirrors: A person's face is 30 cm in front of a concave spherical shaving mirror. If the image is an erect image that is 1.5 times as large as the object, what is the focal length mirror?
A. 20 cm B. 50 cm C. 70 cm D. 90 cm
In the picture shown, the lines are called __________________
Fill in the blank(s) with correct word.