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 …

Space station experiment to probe plant disease...
on October 30, 2026 at 3:00 am
As NASA and its partners prepare for longer human missions beyond Earth, University of Florida researchers are investigating a challenge that could affect astronauts' ability to grow fresh food in space: plant disease.
Asteroids venturing near white dwarfs don't break...
on October 29, 2026 at 10:50 pm
When asteroids travel too close to white dwarfs, the dense remnants of stars that have exhausted their nuclear fuel, powerful gravitational forces can tear them apart. However, new research from Planetary Science Institute (PSI) suggests that these asteroids don't immediately break into dust. Instead, most of the mass initially remains in larger fragments, revealing a previously overlooked step in how debris forms around dying stars.
Newly discovered amoeba reproduces at 145 F,...
on October 29, 2026 at 7:30 pm
Organisms are products of the environments they live and evolve in. While the physical world is governed by universal laws like thermodynamics and gravity, there are few laws of biology. An open question for biologists like me is how environmental conditions shape what organisms look like and dictate how they live, breathe and move.
Planetary collisions may help young worlds hold...
on October 29, 2026 at 7:30 pm
A new study lets some of the air out of a long-held theory that growing, rocky planets will lose their atmosphere if they smash into a large object in space.
Cosmic microwave background offers evidence of...
on October 29, 2026 at 4:10 pm
The cosmic microwave background (CMB) is a faint glow in the universe dating back to roughly 380,000 years after the Big Bang, long before stars or galaxies emerged. Detecting this light and mapping its fluctuations provide valuable insights into the age and composition of the universe.