Word: denser
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...Vesta, which measures about 330 miles (531 km) at maximum diameter, or roughly the width of Arizona, is thought to account for 1 out of 20 meteorites that strike Earth, while Ceres, which is closer to us, provides none. One reason might be simply that Vesta is made of denser stuff, material that when it breaks away can remain intact through the long journey to Earth. "Ceres is not very thick," says Russell, "and whenever there's an impact, it knocks off ice and a lot of dust that doesn't survive the trip." That ice makes Ceres intriguing...
...hundred-thousandths of its present age--in surprising detail. This was the baby picture Loeb referred to. At that point, the universe was still a very simple place. "You can summarize the initial conditions," says Loeb, "on a single sheet of paper." Some regions were a tiny bit denser than average and some a little more sparse. Most of the stuff in it--then and still today--was the mysterious dark matter that nobody has yet identified, largely because it doesn't produce light of any sort. The rest was mostly hydrogen, with a bit of helium mixed...
...first, the simulations agree, gravity was the only force at work. Regions of higher density drew matter to them, becoming denser still--a pattern preserved to this day in the distribution of galaxies, with huge clusters where there were high-density regions back then and great voids in between. Eventually, clouds of hydrogen became so dense that their cores ignited with the fires of thermonuclear reactions--the sustained hydrogen-bomb explosions, in essence, that we know as stars. But whereas the familiar stars of the Milky Way are mostly similar in mass to the sun, these first stars were...
...idea behind driving down costs is similar to that in the computer industry. Church says that to decrease costs, genomists must decrease manual labor as much as possible and create denser, smaller samples of DNA and enzymes...
...fact, both the disease and calcium's role in bone development are still poorly understood. During normal youthful maturation the body readily absorbs calcium, which helps to build bigger and denser bones. After about age 35, however, the process begins to reverse. The body becomes less able to take in calcium, and the blood, which needs the mineral for other organs, begins to leach it out of bones, leaving them weaker. Women suffer in particular because their bones are smaller and less dense than men's. More important, for reasons that are not yet known, menopause speeds up bone loss...