GK
BIG BANG THEORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
In the 1950s we discovered massive celestial objects emitting exceptionally large amounts of energy. We call them quasars, and they are huge black holes in the center of early galaxies with super-heated gases jetting out from them along with radio waves. At a science conference you are challenged to construct an explanation using cause and effect connections about how quasars support the Big Bang model. (select 2 choices)Note:Which answer choice clearly shows correct cause and and effect connections?
|
|
In 2017, a quasar was discovered that is 13.1 billion light years away allowing us to view the early stages of galaxy formation not long after the Big Bang event.
|
|
|
Unlike other celestial objects, quasars did not conform to Newtonian physics or to Einstein’s equations. Therefore, we can conclude that they formed prior to the Big Bang.
|
|
|
Quasars have tremendous luminosities due to the super-heated gas being expelled outwards in huge jets that are larger and longer than their host galaxies.
|
|
|
Quasars are red shifted revealing that the universe is expanding. Since the universe is expanding today then in the past in must have been compacted into a smaller configuration.
|
Explanation:
Detailed explanation-1: -They saw starlike objects that radiated radio waves (hence quasi-stellar radio objects), but which were not visible in optical telescopes. Their resemblance to stars, their brightness and small angular diameters understandably led astronomers of the time to assume they were looking at objects within our own galaxy.
Detailed explanation-2: -They typically exist at the centre of large galaxies, including the centre of our own galaxy, the Milky Way. Direct evidence for a supermassive black hole – a plot of the orbital motion of the star S2 around the centre of the Milky Way.
There is 1 question to complete.