Multiple Choice
The search for black holes involves searching for
A) single stars that emit large amounts of X-rays.
B) X-ray binaries where the compact companion has a mass in excess of 3 
.
C) large spherical regions from which no light is detected.
D) pulsars with periods less than one millisecond.
E) pulsars that are orbited by planets.
Correct Answer:
Verified
Correct Answer:
Verified
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