Gravity

Cosma / Communication / Knowledge / Realm / Physical / Force / Gravity
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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 — Merriam-Webster See also OneLook

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

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

Gravity (Encyclopædia Britannica)

Search

Gravity (WolframAlpha)

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Adventures

Explore related posts on Cosma …

The Waves Won! - Gravitational waves that is! It has been announced that Rainer Weiss (MIT), Barry Barish (Caltech) and Kip Thorne (Caltech) have won the 2017 2017 Nobel Prize in Physics for their decisive contributions to the LIGO detector and the first observation of gravitational waves in 2015. Here are links to a one minute video from Newsy … Continue reading The Waves Won!

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Inspiration

Subatomic Stories (Fermilab, YouTube Playlist)
Fermilab (Official Website)

The Power of Gravity (Wonders of Life w/ Prof Brian Cox, BBC Earth)

Talks about Gravity (TED: Ideas Worth Spreading)
Articles about Gravity (Big Think)

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Innovation

Science

Physics (Free Animated Education, YouTube Playlist)
Free Animated Education (Facebook)

Gravitation: The Four Fundamental Forces of Physics (SciShow)

Gravity (Eric Weisstein’s World of Physics, Wolfram Research)
Gravity (Astronomy Café)

Commerce

Entrepreneurship

Gravity Campaigns (Kickstarter)

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Preservation

History

Newton and Leibniz (Crash Course History of Science)

Isaac Newton on Objectivity (Objectivity, YouTube Playlist)

The Newton Project:Newton’s Writings as He Wrote Them (The Newton Project)

Library

DDC: 531.14 Gravitation (Library Thing)
Subject: Gravitation (Library Thing)

Subject: Gravitation (Open Library)

LCC: QC 178 Gravitation (UPenn Online Books)

LCC: QC 178 Gravitation (Library of Congress)
Subject: Gravitation (Library of Congress)

Subject: Gravitation (WorldCat)

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Participation

Education

Science Trek (YouTube Channel)
Science Trek (Official Website)

Gravity (Science Trek)

Physical Science: Introduction to Gravity (Crash Course Kids, YouTube Playlist)

What is Gravity? (Space Place, NASA)
Gravity (Physics4Kids)

Gravitation: From Newton to Einstein (Contemporary Physics Project)

Course

Newtonian Gravity (Crash Course Physics)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

News

Gravitation (JSTOR)
Gravitation (EurekaAlert, AAAAS)
Gravitation (NPR Archives)

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Expression

Fun

Arpan Jolly (YouTube Channel)
Arpan Jolly (Instagram)

Humor

Gravity (Tim Hunkin, The Rudiments of Wisdom Encyclopedia)

Recent News from Phys.org …

ASTRID traces 13.5 billion years of black hole...
on August 27, 2026 at 9:10 pm
In dark skies at night, distant starlight twinkles and speaks to vast cosmic histories almost as old as time itself. New data from instruments such as NASA's James Webb Space Telescope are helping astrophysicists probe deep cosmic mysteries, including the evolution of black holes and galaxies.
Milky Way's own gravity can mimic dark matter...
on August 27, 2026 at 9:00 pm
Most of the stars in our Milky Way galaxy sit neatly on a flat plane. But the space around our galaxy is much more chaotic. Rogue bands of stars called "stellar streams" orbit the Milky Way much like planets in our solar system orbit the sun.
The physics of kiiking, Estonia's extreme sport...
on August 27, 2026 at 4:09 pm
When an athlete swings upside down atop a 7-meter (23-foot) pendulum, it may seem like a feat of strength, courage or technique. A new study suggests it is something more fundamental: a striking demonstration of how intelligence emerges from the interaction of brain, body and environment.
New clues about how space travel may affect...
on August 27, 2026 at 12:40 pm
As space missions become longer and ambitions for deep-space travel grow, scientists are working to understand how life beyond Earth may affect every system in the human body. Two years after her initial study took flight, Begum Mathyk, MD, and collaborators are continuing to push the frontier of women's health in space, this time by examining how altered gravity may affect female biology.
Thermal anomaly discovered below Mars' south pole
on August 26, 2026 at 8:20 pm
Researchers have discovered a thermal asymmetry deep beneath the surface across Mars' southern hemisphere. Based on gravitational measurements that provide clues to the Red Planet's interior structure, Mars' southern interior is around 200 to 400 degrees Celsius warmer than the planet's northern half and partially molten. The surprising finding adds context to Martian history and the periods during which it may have hosted conditions favorable for life.