If one object has a large redshift and another object has a small redshift, what can we conclude about these two objects?
A) The one with the large redshift is moving toward us faster than the one with the small redshift.
B) The one with the large redshift is moving away from us, and the one with the small redshift is moving toward us.
C) The one with the large redshift is moving away from us faster than the one with the small redshift.
D) The one with the large redshift is hotter and therefore is putting out more radiation.
E) The one with the large redshift is redder in color than the other one.
C) The one with the large redshift is moving away from us faster than the one with the small redshift.
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The greenhouse effect occurs because carbon dioxide is opaque to infrared radiation
a. True b. False Indicate whether the statement is true or false
An ion engine provides a small but constant force on a spacecraft as it moves from Earth to Pluto. Compare the acceleration of the spacecraft near the beginning of its journey with its acceleration as it flies past Pluto.
A. The spacecraft's acceleration at Pluto is slower than its acceleration near Earth. B. The spacecraft's acceleration at Pluto is the same as its acceleration near Earth. C. The spacecraft's acceleration at Pluto is faster than its acceleration near Earth. D. The relative acceleration cannot be determined with the information given.
What is the name of a sudden, highly energetic, eruptive explosion on the surface of the Sun?
A. flare B. coronal hole C. granulation D. sunspot