How can we develop a unified theory of physics that seamlessly integrates general relativity and quantum mechanics, providing a consistent description of the universe from the largest scales of cosmology down to the smallest scales of particle physics?

Which one of the following statements concerning the standardcosmological model is false?


a.
About 0.5 million years after the Big Bang, hydrogen and heliumatoms began to form.

b.
The first distinguishable particles in existence after the Big Bangwere quarks and leptons.

c.
Shortly after the Big Bang, all of the fundamental forces behavedas a single force.

d.
The Grand Unified Theory describes the universe immediately beforeand shortly after the Big Bang.

e.
At 10–43 s after the Big Bang, the gravitational force wasdistinguishable from the other fundamental forces.

Which one of the following statements concerning the standardcosmological model is false?


a.
About 0.5 million years after the Big Bang, hydrogen and heliumatoms began to form.

b.
The first distinguishable particles in existence after the Big Bangwere quarks and leptons.

c.
Shortly after the Big Bang, all of the fundamental forces behavedas a single force.

d.
The Grand Unified Theory describes the universe immediately beforeand shortly after the Big Bang.

e.
At 10–43 s after the Big Bang, the gravitational force wasdistinguishable from the other fundamental forces.

In cosmology, we speak of the system associated with the relictradiation. Even we know the speed of the Sun to the system. (Orderof 300 km / s)

Is not this at odds with the principle of special relativity?

(In other words, the microwave background radiation as it was forthe physics of the 19th century ether?)