Respuesta :
Answer:
The central idea supported by the details in the excerpt is the statement that "This will reduce the enormous cost of shuttling supplies for a Mars mission all the way from Earth."
Explanation:
a) The central idea of an excerpt is the element that unifies the story. Â It ties other the elements together. Â It is the dominant impression or the universal, generic truth found in the story. Â It is also known as the main idea, which, in most cases, is not clearly stated in a write-up.
b) According to www.nasa.gov, "NASA's Phase 1 Gateway includes a Power and Propulsion Element, Habitation and Logistics Outpost and logistic supply. The Gateway will be an outpost orbiting the Moon that provides vital support for a sustainable, long-term human return to the lunar surface, as well as a staging point for deep space exploration."