TRUE OR FALSE: In an unbounded universe, all hydrogen will be used up in about a trillion years
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TRUE OR FALSE: In an unbounded universe, all hydrogen will be used up in about a trillion years
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- The discovery of the dark energy was a surprise because astrophysicists generally assumed that the expansion would be slowing down. Select one: True FalsePlease list 4 different forms of energy present in the universe?Your friends are talking about Olber's Paradox: Friend 1: When the universe was quite young, it was also quite small, and therefore light was trapped inside the universe. This is why we don't see light from the edge of the universe in every direction. Friend 2: No, Olber's Paradox describes only light from stars, not from galaxies, and why you can't use light from distant stars to see at night. Friend 3: You're both right and you're both wrong. The paradox concerns itself with the expansion of the universe, and explains why light from the early universe was able to be released. Are any of them right, in part or in whole?
- Scientists claim that empty space has an undetectable form of energy known as “dark energy.” This theory is needed to explain wich of the following? * A) The galaxies in the universe are getting brighter. B) The universe is heating up. C) The universe is expanding at an increasing speed. D) The stars and planets in the universe are getting louder.What are a couple of scientific speculations that describe the future of our universe?The presence of dark energy affects to the way the Universe is expanding. Select one: True False