This website gives a really good explanation.
http://web.uvic.ca/~mbest1/engl366c2005/merchant1.html
Answer:
The future doesn’t belong to the fainthearted; it belongs to the brave. The Challenger crew was pulling us into the future, and we'll continue to follow them.
Explanation:
President Reagan made the Challenger speech to commiserate with the families of the crew of the Challenger and school teacher Christa McAuliffe who was to go into orbit that had the unfortunate accident and also to advocate for future space expeditions.
The tragedy was especially painful because a lot of school children were watching as the Challenger went into motion and witnessed the horror. It was up to President Reagan to address the eight-year-olds, eighteen-year-olds, and eighty-year-olds. He decided to be plain to American listeners without being patronizing anyone. He admitted that he had to be "plain to them that life goes on and you don't back up and quit some worthwhile endeavor because of tragedy"
Answer:
incomplete sentence
Explanation:
It is a dependent or subordinate clause because it starts with a subordinating conjunction (when). It cannot stand as a sentence.
