The cosmic background radiation corresponds to a blackbody at a temperature of 2.726 kelvins
a. True
b. False
Indicate whether the statement is true or false
True
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An incredibly dense star so massive that light cannot escape from its surface is called a(n) ______________
Fill in the blank(s) with correct word
Superconductivity is lost when a certain __________ is exceeded
Fill in the blank(s) with correct word
Which statement is true about asteroids? a. All asteroids are found in the asteroid belt between Mars and Jupiter. b. Asteroids are also called dwarf planets
c. Asteroids have an irregular shape and are battered by impact cratering. d. All asteroids have bright, reflective surfaces. e. Asteroids originated from older moons.
Brown dwarfs have
A) very narrow habitable zones B) no habitable zones C) very wide habitable zones D) habitable zones similar to the Sun