1. The researchers began by consolidating that a uniform field of energy pervaded the universe shortly before the Big Bang. Scientists expect that such fields existed in the recent past. After the universe rapidly expanded, this energy field would have separated into clumps. Gravity would create these clumps to attract one another and merge together. The UCLA researchers proposed that some small fraction of these growing clumps became dark enough to become black holes.
2. A 52-million-year-old ankle fossil suggests our prehumen ancestors were high-flying acrobats. For years, scientists taught the ancestors of today’s humans, monkeys, lemurs, and apes were relatively slower and deliberate animals, using their grasping legs and feet to creep along small twigs and branches. But a new study suggests the first primates were masters at sweeping through the trees.
3. The tentacles of jellyfish galaxies are produced in galaxy clusters by a procedure called ram pressure stripping. Their mutual gravitational attention causes galaxies to fall at high speed into galaxy clusters, where they encounter a hotter, dense gas which acts like a powerful wind, forcing tails of gap out of the galaxy’s disc and triggering starbursts with it.
4. How it emerged from the cosmic dark ages to a clear, light-filled state remains a mystery. In a new study, researchers at the University of Iowa proposal a theory of how that happened. They think black holes that dwell in the corner of galaxies fling out matter so violently that the rejected material pierces its cloudy surroundings, allowing light to escape. The researchers arrived at their theory after detecting a nearby galaxy from which ultraviolet light is escaping.
5. Gravitational waves carry information about the tragic origins of black that cannot otherwise be retained. Physicists concluded that the first detected gravitational winds, in September 2015, were produced during the final fraction of a second of the merger of two black holes to produce a single, more bigger spinning black hole. Collisions of two black holes had been predicted but never witnessed.
Answers:
1. The researchers began by considering that a uniform field of energy pervaded the universe shortly after the Big Bang. Scientists expect that such fields existed in the distant past. After the universe rapidly expanded, this energy field would have separated into clumps. Gravity would cause these clumps to attract one another and merge together. The UCLA researchers proposed that some small fraction of these growing clumps became dense enough to become black holes.
2. A 52-million-year-old ankle fossil suggests our prehumen ancestors were high-flying acrobats. For years, scientists thought the ancestors of today’s humans, monkeys, lemurs and apes were relatively slow and deliberate animals, using their grasping hands and feet to creep along small twigs and branches. But a new study suggests the first primates were masters at leaping through the trees.
3. The tentacles of jellyfish galaxies are produced in galaxy clusters by a process called ram pressure stripping. Their mutual gravitational attraction causes galaxies to fall at high speed into galaxy clusters, where they encounter a hot, dense gas which acts like a powerful wind, forcing tails of gas out of the galaxy’s disc and triggering starbursts within it.
4. How it emerged from the cosmic dark ages to a clearer, light-filled state remains a mystery. In a new study, researchers at the University of Iowa offer a theory of how that happened. They think black holes that dwell in the center of galaxies fling out matter so violently that the ejected material pierces its cloudy surroundings, allowing light to escape. The researchers arrived at their theory after observing a nearby galaxy from which ultraviolet light is escaping.
5. Gravitational waves carry information about the dramatic origins of black that cannot otherwise be obtained. Physicists concluded that the first detected gravitational waves, in September 2015, were produced during the final fraction of a second of the merger of two black holes to produce a single, more massive spinning black hole. Collisions of two black holes had been predicted but never observed.