Question

What objects will emit energy in the universe?
A. Any object in the universe with a temperature above absolute zero
B. Only stars and other large bodies (i.e. planets, asteroids)
C. Only black holes and other gravitational vacuums

Answer 1

Any object in the universe that basically has a temperature above absolute zero. 

Answer 2

Answer:

The correct answer is option A,  Any object in the universe with a temperature above absolute zero

Explanation:

All objects which are at absolute zero temperature radiates energy in the form of electromagnetic waves. The energy radiated is calculated using Planck’s law

E = hc/lambda

h = Boltzmann constant  

c = speed of light and  

lambda = wavelength  

The higher the temperature of the body the shorter will be the wavelength of the radiations.