The promise of RDREs is that they can move a spacecraft faster and more efficiently, allowing them to carry heavier payloads and travel farther distances than conventional rockets.
I mentioned it was 41-C that originally was STS-13, and my friend Jim Beggs, who was the administrator of NASA, had triskaidekaphobia, and he said, 'There's not going to be [another] Apollo 13 or a Shuttle 13, so come up with a new numbering system.'
Citizen Science Month is built around a goal of 2.5 million 'Acts of Science,' tying the annual event to America's 250th birthday through a simple but powerful idea: lots of small contributions can add up to something really meaningful.