List 3 heavenly bodies that were discovered using radio waves

The answer is;

1.        quasars (brightest objects in the Universe powered by black holes),

2.       coronal clouds (plasma clouds released from a coronal mass ejection in stars like the sun), and

3.       pulsars (Fast spinning, flashing neutron stars).

The use of radio waves to discover celestial bodies is called radio astronomy.  

the answer would be 3

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a