Author Question: The highest luminosity burst of radiation observed from a pulsar is the result of _____. a. the ... (Read 35 times)

mp14 · **on:** Jul 27, 2018

The highest luminosity burst of radiation observed from a pulsar is the result of _____.

a. the pulsation of a neutron star's surface
b. a hot spot that rotates around the equator of a pulsar
c. a spinning beam of radiation emerging from the pulsar's poles
d. the rotation of an accretion disk transferring matter to the pulsar's surface
e. the revolution of a binary companion that eclipses the pulsar, then reveals it

Question 2

What was Tycho Brahe's contribution to astronomy?

a. He proved that Earth rotates on its own axis and revolves around the Sun.
b. He designed the three laws of planetary motion.
c. He discovered satellites around Jupiter, which proved Earth could move and keep its satellite.
d. He described why each of the planets moved in uniform circular motion.
e. He compiled detailed observations of the positions of the Sun, Moon, and planets over a period of 20 years.