It's make or break time for SpaceX.

On March 30, pending agreeable weather, Elon Musk's rocket company will try to make good on its promise to slash the immense cost of launching stuff into space.

The goal is to re-launch and recover a first-stage booster, or lower half, of a 229-foot-tall (70-meter-tall) Falcon 9 rocket that SpaceX first fired off on April 8, 2016. The booster in question helped deliver a satellite into orbit, screamed back to Earth, righted itself, and self-landed on a drone ship in the Atlantic Ocean.

This is highly unusual: Nearly all rocket parts today crash into the ocean following launch, sink to the bottom, and are never seen again. A booster, which is typically the most expensive part of multi-stage rockets, can cost tens of millions of dollars.

To read more, click here.