Unlike “black holes,” which pull in and swallow surrounding cosmic matter, a “gravity hole” pushes surrounding material away due to the lack of gravity. When formed in an ocean, a gravity hole pushes water away and creates air pockets where water should have been, causing sea levels to drop. Take the example of the world’s … Read more
For many astronauts, spacewalking is the ultimate ambition, but only the elite are qualified to do it. And Cady Coleman—who spent six months on the International Space Station in 2010—is quick to point out that it is NOTHING like Sandra Bullock’s glamorous performance in Gravity. Coleman gave the actress in the film advice on how … Read more
Sjors Heefer’s PhD research investigates gravitational waves and spacetime using Finsler geometry, with the aim of reconciling general relativity with quantum mechanics. His findings support the Finslerian nature of spacetime, in line with observations of gravitational waves. Credit: SciTechDaily.com Investigations gravitational waves and their relationship with Finsler geometry provide new insights into spacetime and suggest … Read more
Using gravitational lensing, scientists have discovered that dark matter can extend more than a million light-years from galactic centers, proposing significant adjustments to our theories of gravity or the concept of dark matter itself. Credit: SciTechDaily.com Groundbreaking new research shows that the rotation curves of galaxies remain flat far away, confirming the predictions of modified … Read more
An illustration of distant quasar, supermassive, black hole-powered objects that can be used to constrain the parameters of gravity theories. Credit: ESO/M. Kornmesser A recent study explored teleparallel gravity and its potential to resolve the tension surrounding the expansion of the universe in a way that general relativity cannot. In the early 20th century, our … Read more
This article was reviewed according to Science fact checked trusted source proofread OK! An illustration of distant quasar, supermassive, black hole-powered objects that can be used to constrain the parameters of gravity theories. Credit: ESO/M. Kornmesser × close to An illustration of distant quasar, supermassive, black hole-powered objects that can be used to constrain the … Read more
What is gravity without mass? Both Newton’s revolutionary laws describing its universal effect and Einstein’s proposal of a dimpled space-time have led us to think of gravity as falling solely within the domain of matter. Now a wild new study suggests that gravity can exist without mass, easily eliminating the need for one of the … Read more
A new explanation for why we haven’t found dark matter suggests it doesn’t exist. Instead, the author thinks we have misunderstood gravity. He is not the first to suggest this, but the new proposal, of gravity without mass, created by topological defects in space-time, is particularly novel. Dark matter was first proposed in 1932, based … Read more
For centuries, scientists have grappled with the fundamental forces that govern our universe, the most important of which are gravity and, more recently, dark matter. Gravity is the invisible force that pulls objects of mass together and plays a crucial role in shaping the cosmos, from the formation of galaxies to the orbits of planets. … Read more
A recent study that poses new challenges to the existence of dark matter suggests that gravity can exist even in the absence of mass. Although all life on Earth experiences its effects every day, gravity remains one of the great mysteries of modern physics. Now, a new study published by Dr. Richard Lieu of the … Read more