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Articles on Gravity
Displaying 1 - 20 of 88 articles
How does flowing water make electricity? An engineer explains hydroelectric generation.
The theory of gravity may need to be altered.
Strangely behaving matter could one day explain some of the mysteries of space.
A comparison of star-forming galaxies suggests, surprisingly, that dark matter and visible matter do interact – taking us closer to understanding what keeps the galaxies together.
Astronomers have discovered the first dormant black hole outside of the Milky Way. These black holes are not absorbing matter from a nearby star, making them incredibly hard to find.
Recent results cast doubt on dark matter.
What happens to pilots’ bodies when they fly at breakneck speeds.
Sagittarius A* is a massive black hole at the center of the Milky Way. Now that astronomers have imaged it, they can begin to learn more about black holes within other galaxies across the universe.
Ski jumpers do everything they can to counteract the effects of gravity and fly as far as they can down hills.
Some black holes are isolated in space and therefore near impossible to detect.
It may look like athletes in bobsled, luge and skeleton simply grab a sled and hang on until the bottom, but high-speed physics and tiny motions mean the difference between gold and a crash.
Some planets are rejected by the Solar System that gave birth to them.
Hypervelocity stars were discovered only 15 years ago and are the closest things in existence to real shooting stars. They travel at millions of miles per hour, so fast that they can escape from galaxies.
Physicists know a lot about the most fundamental properties of the universe, but they certainly don’t know everything. 2021 was a big year for physics – what was learned and what’s coming next?
Astronomers watched a pair of pulsars for 16 years to test the theory of general relativity, which has stood unchallenged for over a century.
Such a mission could be developed soon, allowing astrophysicists to take selfies of the solar system and use the Sun’s gravity as a lens to peer deep into space.
Gravity, mass and centrifugal force all contribute to the final shape of a planet.
Gravity is something every person on Earth intuitively understands: It is what keeps you on the ground. But how come gravity pulls down, rather than pushes up? Einstein came up with the answer.
The reason bigger objects in space are round and smaller ones aren’t boils down to gravity. And it’s the same reason mountains on Earth can only grow to a certain height
Top contributors
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Emeritus Professor, ARC Centre of Excellence for Gravitational Wave Discovery, OzGrav, The University of Western Australia
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Reader in Astrophysics, Keele University
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Professor, The University of Queensland
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Senior Lecturer and ARC Future Fellow, Monash University
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Professor of Gravitational Astrophysics and Cosmology, University of Glasgow
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First Year Physics Coordinator, The University of Melbourne
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Postdoctoral Research Fellow in Astrophysics, University of St Andrews
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Academic Faculty in Physics & Astronomy, Georgia State University
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Associate Professor in Astronomy, Monash University
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Professor, University of Sydney
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Professor of Astrophysics, University of Sydney
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Professor of Avian Behavioural Ecology, Macquarie University
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Professor (Astrophysics), University of Southern Queensland
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PhD; Associate Professor in Astrophysics, Monash University
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Senior Instrument Scientist, Australian Nuclear Science and Technology Organisation
