Tenebrous
BigG > Mad Celestial Host
Originally posted by Symmetric Chaos
Both planets have ridiculous power houses with HQs on Earth.Thor and BRB can absorb some of the blast, Strange and Talismain can use those 10 minutes to rig up some obscene shield, there are some very powerful mutants still on Earth to shield it, finnally if need be every energy projector on the planet can just aim at the blast and cancel out a small part of it (every little bit helps)
Absorb some of the blast? You are kidding. To see a remote approximation of the kind of power Galactus would unleash in this situation, look at Annihilation #6, where he let loose with an omnidirectional blast that destroyed three star systems, a blast that did not show any signs of slowing once it obliterated the third. Galactus was extremely weak at his point, yet the blast was strong enough to vaporize a Watcher. The only entities that survived the blast at ground zero, where the blast originated from, were annihilus, who had his cosmic control rod as well as the quantum bands of quasar, and Nova, who was powered by the entire nova force of all the nova corps.
Thor and BRB will instantly die. They are strong but you underestimate Galactus to a staggering degree. In fact, Stardust and Red Shift were able to hold back some of a PLANET destroying blast from a Galactus beam before being vaporized. Thor and BRB will do nothing against a galaxy-leveling pulse wave.
Anyway this point is moot. If the Galactus arriving at DC and Marvel Earth is non PIS and CIS, then universal cosmic awareness works to Galactus' favor and he is able to ascertain what measures are being taken to deflect/repel his blast. He adjusts his tactics accordingly.
In the odd instance that Galactus actually does get resisted, or in the case of Wonder Woman, who uses the purple ray, Galactus can instantly and literally wave his hand and transmute at least half of them into weightless cow shit in space, or simply just feed on them and absorb there energies.
If anyone would be so bold as to attempt using the UN, galactus easily recalls it from whoever produces it, and in a fit of rage galactus can use the un to erase both earths from existence, and erase all timelines were various heroes originated from to prevent any challenge from time-travelers.
In 10 minutes time you will have Reed and Doom still arguing over who has the better intent for mankind, much less who will agree to a plan devised by the other to repel Galactus.