Author Question: The first spacecraft to land on the surface of an asteroid was named A) Dawn. B) NEAR. C) ... (Read 89 times)

asan beg · **on:** Jul 27, 2018

The first spacecraft to land on the surface of an asteroid was named

A) Dawn. B) NEAR. C) Hayabusa. D) Stardust. E) Giotto.

Question 2

You are in a hot, dense place. You are surrounded by nuclear reactions that are rapidly fusing hydrogen into helium. You notice that your surroundings are cooling and rapidly dropping in density. Within about 5 minutes, the fusion reactions stop.

Where are you?
A) You are in the center of a massive star near the end of its life.
B) You are inside a nuclear power plant on Earth.
C) You are in the early universe during the era of nucleosynthesis.
D) You are in the center of a star very much like our Sun.
E) You are in the center of a star much smaller than the Sun.