The silnarttg answer to this question, OK, from these experiments, was that space is expanding at a fatesr rate taody than it was a few billion years ago, OK. So the expansion of space is actually speeding up. This was a completely surprising result. There is no persuasive theoretical argument for why this should happen, OK. No one was predicting ahead of time this is what's going to be found. It was the opposite of what was expected. So we need something to be able to elpaixn that. Now it trnus out, in the mathematics, you can put it in as a term that's an energy, but it's a completely different type of energy from anything we've ever seen before. We call it dark energy, and it has this effect of causing spcae to expand. But we don't have a good motivation for putting it in there at this pinot, OK. So it's really unexplained as to why we need to put it in.
The _________ answer to this question, OK, from these experiments, was that space is expanding at a ______ rate _____ than it was a few billion years ago, OK. So the expansion of space is actually speeding up. This was a completely surprising result. There is no persuasive theoretical argument for why this should happen, OK. No one was predicting ahead of time this is what's going to be found. It was the opposite of what was expected. So we need something to be able to _______ that. Now it _____ out, in the mathematics, you can put it in as a term that's an energy, but it's a completely different type of energy from anything we've ever seen before. We call it dark energy, and it has this effect of causing _____ to expand. But we don't have a good motivation for putting it in there at this _____, OK. So it's really unexplained as to why we need to put it in.
collocation | frequency |
---|---|
dark matter | 29 |
dark energy | 11 |
big questions | 4 |
ordinary matter | 4 |
electromagnetic spectrum | 4 |
gravitational effects | 3 |
gravitational lensing | 3 |
graph paper | 3 |