What the SpaceX launch might mean for exploration
In the afterglow of SpaceX's successful Falcon Heavy launch on Tuesday, Elon Musk told reporters the reusable rocket could "launch things direct to Pluto and beyond; no stop needed. You don't even need a gravity assist."
Why that matters: Interplanetary spacecraft often rely on the gravitational forces of planets to reach their targets — because that method takes less fuel and a smaller rocket. Cassini was boosted to Saturn by Venus, Earth and Jupiter, for example. If the Falcon Heavy and any successors can provide a direct route to the outer solar system, it would save time (and money) and could therefore mean more missions.