These are organized by a classification scheme developed exclusively for Cosma. More…
gravity : (1) : the gravitational attraction of the mass of the earth, the moon, or a planet for bodies at or near its surface (2) : a fundamental physical force that is responsible for interactions which occur because of mass between particles, between aggregations of matter (such as stars and planets), and between particles (such as photons) and aggregations of matter, that is 10-39 times the strength of the strong force, and that extends over infinite distances but is dominant over macroscopic distances especially between aggregations of matter — called also gravitation, gravitational force — Webster
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light —are brought toward (or gravitate toward) one another. On Earth, gravity gives weight to physical objects, and the Moon’s gravity causes the ocean tides. The gravitational attraction of the original gaseous matter present in the Universe caused it to begin coalescing, forming stars – and for the stars to group together into galaxies – so gravity is responsible for many of the large scale structures in the Universe. Gravity has an infinite range, although its effects become increasingly weaker on farther objects. — Wikipedia
Cambridge Digital Library Starts Off by Posting Newton’s Papers (Jennifer Howard, Chronicle of Higher Education)
Papers of Sir Isaac Newton (Cambridge University Library)
The Newton Project:Newton’s Writings as He Wrote Them (The Newton Project)
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The secret of platinum deposits revealed by novel...
on June 19, 2019 at 1:49 pm
Research from the Wits School of Geoscience shows how platinum deposits form in the Bushveld Complex of South Africa. […]
NEEMO: Testing space gear under the sea
on June 19, 2019 at 11:15 am
NASA's Extreme Environment Mission Operations takes place more than 18 meters below the surface of the Atlantic Ocean. For nine days, astronauts, engineers, and scientists live and work underwater, testing new technologies for space. […]
Cool halo gas caught spinning like galactic disks
on June 19, 2019 at 7:24 am
A group of astronomers led by Crystal Martin and Stephanie Ho of the University of California, Santa Barbara, has discovered a dizzying cosmic choreography among typical star-forming galaxies; their cool halo gas appears to be in step with the galactic disks, spinning in the same direction. […]
Does the gas in galaxy clusters flow like honey?
on June 18, 2019 at 7:33 pm
We have seen intricate patterns that milk makes in coffee and much smoother ones that honey makes when stirred with a spoon. Which of these cases best describes the behavior of the hot gas in galaxy clusters? By answering this question, a new study using NASA's Chandra X-ray Observatory has deepened our understanding of galaxy clusters, the largest structures in the Universe held together by gravity. […]
Scientists find sun's history buried in moon's...
on June 17, 2019 at 8:45 pm
The Sun is why we're here. It's also why Martians or Venusians are not. […]