However,The Fantastic Four: First Steps' second trailer confirms that Galactus is able to size-shift.
As Galactus shrinks, he would match the Avengers Tower’s 1,130 ft (344m).
Instead of ingesting planets through his mouth, Galactus absorbs their energy, destroying them in the process.
Galactus also doesn’t need to be larger than a planet for consume it.
He can drain a planet’s energy while standing on it, regardless of his current size.
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