What does the story say fission is important to the process of nuclear thermal propulsion?

What related technology does the story say NASA is also planning to develop for future space activities?

How does the story say nuclear thermal propulsion can improve rocket performance?

According to Nelson …

What does the story say DARPA is partly responsible for helping begin?

TASK 1.1. NASA TO WORK WITH MILITARY AGENCY ON NUCLEAR ROCKET TEST FLIGHT. - MATCH THE WORDS AND PHRASES WITH THE DEFINITIONS.

NASA TO WORK WITH MILITARY AGENCY ON NUCLEAR ROCKET TEST FLIGHT.

Вкажіть чотири ознаки, які відрізняють земноводних від риб:

До вісцерального скелету круглоротих належать хрящі:

Вкажіть ознаки, які є спільними для хордових і безхребетних: