EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a rapidly spinning neutron start that emits pulses of radio and optical energy?
A
pulsar
B
quasar
C
black hole
D
supernova
Explanation: 

Detailed explanation-1: -The correct answer is Pulsar. Explanation: A pulsar (from pulsating radio source) is a spinning neutron star that emits beams of electromagnetic radiation (radio-wave) from its magnetic poles.

Detailed explanation-2: -A pulsar (from pulsating radio source) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles.

Detailed explanation-3: -Pulsars are rapidly spinning neutron stars, extremely dense stars composed almost entirely of neutrons and having a diameter of only 20 km (12 miles) or less. Pulsar masses range between 1.18 and 1.97 times that of the Sun, but most pulsars have a mass 1.35 times that of the Sun.

Detailed explanation-4: -Pulsars and magnetars are both types of neutron stars, which are basically the cores of giant stars left over when the stars themselves go kablooie in events called supernovae.

Detailed explanation-5: -Pulsar is any of a class of cosmic objects that emit extremely regular pulses of radio waves; a few such objects are known to give off short rhythmic bursts of visible light, X rays, and gamma radiation as well.

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