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English, 16.04.2020 19:16 Joshuafranklindude

Read the excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

Most of the time gravity seems to work the way Newton described it. Newton's rules explain a lot, from falling apples to most planets' orbits. But his laws don't work perfectly. In high-gravity zones, Newton's ideas don't jibe with what scientists observe. For example, Mercury's orbit—up close to the Sun—has a blip in it that Newton's laws can't explain.

Glitches like this one were the reason Einstein worked so hard at coming up with a new explanation. He wanted to account for everything. His ideas about curving space may sound bizarre, but they work! They took care of the gaps in Newton's theory and explained Mercury's orbit. They led scientists to predict shifting starlight and black holes. All of this is powerful evidence that Einstein was on to something.

However, in day-to-day experience, the strangeness of Einstein's ideas doesn't help us, and Newton's notions do just fine. In everyday life, when gravity isn't especially intense, Newton's and Einstein's ways of thinking lead to similar results. The two explanations work like different languages that express the same thing. Is an apple red (English) or rojo (Spanish)? It's okay to use either description.

Which detail should be left out of a summary of the excerpt?

Newton’s rules explain a lot, but they do not work in high-gravity zones.
Einstein’s ideas about curving space help explain gaps in Newton’s laws.
Both Newton’s and Einstein’s ideas can work in different circumstances.
Newton’s and Einstein’s ideas are like the word “red” in English or Spanish.

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Read the excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

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