Answer:
A close summary of Reagan’s address about the Space Shuttle Challenger is that the people who died were brave enough to explore new territory and face great risks. He also emphasized that losing the Challenger was an effect of taking the space program for granted. Former President Reagan ended his speech by saying that an event as tragic as this makes one call into question whether to continue with these explorations. He assured the nation cannot let grief hold itself back from carrying on with people’s regular routines.
Step-by-step explanation:
This explanation was determined by my understanding of the text. The text is called "Address to the Nation on the Explosion of the Space Shuttle Challenger," given by President Reagan.