Textbooks often show Earth’s orbit around the Sun as an almost egg-shaped ellipse. The real story is very different.
Articles on Gravity
Displaying 21 - 40 of 120 articles
Observations during historical solar eclipses confirmed Einstein’s theory of gravity, and led to the predictions of black holes.
People have been flying airplanes for well over a century. Engineers know how to balance all the forces at play, but still aren’t exactly sure how some of the physics of flight actually works.
A centuries-old experiment shows the differences between classical and modern physics. Physicists use thought experiments like this to think about how objects move both on Earth and in the stars.
If we lived in a cosmic area with below average density, it would explain recent contradictory measurements of the universe’s expansion.
When you’re an astronaut landing on the Moon, you can’t rely on the same gravitational cues we have on Earth. But regimented training with sensory devices could one day prevent spatial disorientation.
The gravitational field can affect space and time: the stronger gravity is, the slower time moves. This prediction of General Relativity can be used to reveal hidden forces acting on dark matter.
It seems there isn’t a sci-fi part if the universe in which everything is made of antimatter.
Einstein’s theory of general relativity suggests that our universe originated in a Big Bang. But black holes, and their gravitational forces, challenge the limits of Einstein’s work.
Space can damage everything from your cardiovascular and nervous systems to your mental health – long voyages can feel isolating for many.
Black holes are known for pulling in all kinds of stuff – including light. Here’s how that actually works.
The Euclid mission is preparing to launch on July 1.
To understand this question, we need to travel back in time.
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.
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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Postdoctoral Research Fellow in Astrophysics, University of Portsmouth
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Reader in Astrophysics, Keele University
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Professor of Gravitational Astrophysics and Cosmology, University of Glasgow
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Professor of Physics, Simon Fraser University
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Academic Faculty in Physics & Astronomy, Georgia State University
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Senior Lecturer and ARC Future Fellow, Monash University
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First Year Physics Coordinator, The University of Melbourne
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Professor, The University of Queensland
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Associate Dean of Innovation and Engagement, Swinburne University of Technology
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South African Research Chair in Physical Cosmology, Department of Mathematics and Applied Mathematics, University of Cape Town
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SANDALS Instrument Scientist, Science and Technology Facilities Council
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Space Plasma Physicist, Imperial College London
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Ph.D. Candidate in Public Policy, RAND School of Public Policy
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Professor of Physics and Mathematics, Queen's University Belfast