In the style of "Bill and Ted"...
Bill:
Dude, We'll have to remember to come back later, before this all began and remember to make the crater chains.
Ted:
What will we use?
Bill:
What makes craters?!? I know, lets go into the future and find some scientists to help in making an atmosphere for the planets through the use of exploding giant bombs.
Ted:
Well we must have failed Bill, they don't have atomspheres.
Bill:
Well how else are we goning to make craters?
Ted:
Could just build a big catapult and shoot asteroids from the outerrim at planets.
Bill:
Dude that would be a most excellent intergalactic sport, Planet pitting with catapulted asteroids it will make a most bodacious edition to our bands album cover.
Ted: Excellent!
(Album cover depicted as Led Zeppelins "corncircle cover" but with Craterchains)
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In all the above is more likely to be real, even though the characters are complete fiction.