Des2ny is Canon (Story Spoilers) (Destiny)

by squidnh3, Monday, September 11, 2017, 09:46 (2654 days ago) @ Schooly D

Blow up the ship, which is not a threat at all at this point in time.
Assault to take back the city.
Gault takes the light.
Final Showdown.

The mission to destroy The Almighty tried to make it seem like the Sun was going supernova at any moment and we had to stop it. But with Gaul still on Earth and his entire army still in the solar system, surely the danger could not have been imminent.

When I was playing, my understanding was that the protagonists were assuming that Zavala's assault was doomed to fail because the Cabal would just retreat as quickly as they came and blow up the Sun, which would be pretty consistent with their previous behavior (Shield Brothers strike). None of the protagonists were aware of Ghaul's actual plans involving the Traveler beyond cutting off the Light, although we as the players are due to the Ghaul cutscenes.