Multiple Choice
The Crab Nebula is the result of a supernova explosion of a star that occurred at a distance of about 1.84 kpc from Earth. If people first saw the explosion in A.D. 1054, when did the explosion actually occur?
A) about 1048 A.D.
B) 786 B.C.
C) 1054 A.D., of course
D) about 4946 B.C.
Correct Answer:
Verified
Correct Answer:
Verified
Q3: The Copernican system for planetary motions is<br>A)
Q4: Venus experiences all of these EXCEPT<br>A) inferior
Q5: If one uses a force of 100
Q6: Kepler's first law states that a planet
Q7: A major contribution of Johannes Kepler to
Q9: Saturn experiences all of these EXCEPT<br>A) inferior
Q10: If a tenth planet (tentatively predicted to
Q11: When Mars is at perihelion it must
Q12: An asteroidlike object (or a cometary nucleus)
Q13: In the heliocentric model of the solar