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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Astronomers confirm extended atmosphere on...
on December 12, 2018 at 2:47 pm
Astronomers use stellar eclipses to study the atmosphere of accretion disks around compact stars. SRON-researchers observed this method on a low-mass X-ray binary. They find a thicker atmosphere than predicted and distinguish two different gas components. The research was published in Astronomy & Astrophysics. […]
Periodic radio signal detected from the blazar...
on December 12, 2018 at 2:00 pm
Using Owens Valley Radio Observatory (OVRO), astronomers have detected a periodic signal in the radio light curve of the blazar J1043+2408, which could be helpful in improving our understanding about the nature of blazars in general. The finding was presented in a paper published November 30 on arXiv.org. […]
Ant-Man and the Wasp: Small wonders lead to...
on December 11, 2018 at 5:33 pm
Max Mikel-Stites and Anne Staples were searching for a sequel. […]
Geminids meteor shower: An astrophysicist on what...
on December 11, 2018 at 2:50 pm
The Geminids meteor shower peaks on the mornings of December 13 and 14, 2018 – but if you look up any time there's a clear night sky up until December 17, you might just catch a glimpse of a Geminid meteor. […]
Slow flow for glaciers thinning in Asia
on December 11, 2018 at 12:31 pm
Providing water for drinking, irrigation and power, glaciers in the world's highest mountains are a lifeline for more than a billion people. As climate change takes a grip and glaciers lose mass, one might think that, lubricated by more meltwater, they flow more quickly. However, satellite images from over the last 30 years show that it isn't as simple as that. […]