Answer:
The sidebar tells us what Earth scientists are actually doing about the risk of an asteroid impact.
Explanation:
The main part of the page discusses how frequently the moon is hit by rocks; how most rocks are too small to make it past Earth's atmosphere; how the rocks that do make it all the way to Earth's surface are usually pretty small and don't hit anything important; how screwed we would be if a massive rock – like an asteroid – made it to Earth's surface.
The sidebar says that scientists are understandably worried enough about these asteroids – they "feel the danger is to great to ignore" – so they're keeping a lookout for asteroids that might be on a collision course with Earth.
Answer:
Connotation these are the emotions or meanings implied by a word, phase or thing. while nuance is an expression or sound.
The headline will be found at the top of the paper, usually the first thing you see when looking at an article.
The headline explains to you what you will be reading about, for example if you are reading a paper or watching the news about Prince's death, the title would most likely be located at the top of the paper or the top of the news channel
