<p>SpaceX's Falcon Heavy rocket stands ready for launch on the historic launchpad 39A at NASA's Kennedy Space Center.</p>

SpaceX's Falcon Heavy rocket stands ready for launch on the historic launchpad 39A at NASA's Kennedy Space Center.

Photograph from Space X

Why This Week's Big Rocket Launch May Make History

If all goes to plan, the newest member of SpaceX's fleet could become the most powerful rocket since the one that sent humans to the moon.

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