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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Study identifies a transition in the strong...
on February 26, 2020 at 4:00 pm
Most ordinary matter is held together by an invisible subatomic glue known as the strong nuclear force—one of the four fundamental forces in nature, along with gravity, electromagnetism, and the weak force. The strong nuclear force is responsible for the push and pull between protons and neutrons in an atom's nucleus, which keeps an atom from collapsing in on itself.
Turbulent times revealed on Asteroid 4 Vesta
on February 26, 2020 at 2:08 pm
Planetary scientists at Curtin University have shed some light on the tumultuous early days of the largely preserved protoplanet Asteroid 4 Vesta, the second largest asteroid in our Solar System.
Suited up: Testing how microgravity affects our...
on February 26, 2020 at 12:31 pm
When it comes to grasping an object, our eyes, ears and hands are intimately connected. Our brain draws information from different senses, such as sight, sound and touch, to coordinate hand movements.
Exceptional catapulting jump mechanism in a tiny...
on February 25, 2020 at 3:56 pm
The fascinating and highly efficient jumping mechanism in flea beetles is described in a new research article in the open-access journal Zookeys. Despite having been known since 1929, the explosive jump—which is also the reason behind the colloquial name of this group of leaf beetles—has so far not been fully understood.
This is how ESA telescope Euclid is going to...
on February 25, 2020 at 3:25 pm
How can you see something that's invisible? Well, with Euclid! This future ESA telescope will map the structure of the universe and teach us more about invisible dark matter and dark energy. Scientific coordinator of Euclid and Leiden astronomer Henk Hoekstra explains how this works.