All articles tagged with #radius
A 4.5 cm Denisovan forearm bone (radius) from Bianfu Cave in China shows a rare mix of Neanderthal-like joint surfaces and modern-human-like bone shape, filling a major anatomical gap in reconstructing the Denisovan arm and, alongside recent leg-bone findings suggesting extreme height, sheds light on what this elusive lineage looked like.
Neutron stars cram roughly 1–2 solar masses into a sphere about 20 km across; a sugar-cube of their matter would weigh around a billion tonnes on Earth. This extreme density pushes matter to nuclear scales, making neutron stars natural laboratories for ultra-dense matter and helping constrain the equation of state, with many such stars acting as pulsars or magnetars.
New measurements using radio occultation and data from NASA's Juno spacecraft show Jupiter is slightly smaller and more oblate than previously thought, with an equatorial radius of 71,488 km and a polar radius of 66,842 km, refining models of its interior and atmospheric dynamics.
Astronomers have found evidence suggesting that the radius of the Sun is slightly smaller than previously thought. Using p-mode oscillations, which provide a more robust view of the Sun's interior, researchers have calculated that the solar photospheric radius is a few hundredths of a percent slimmer than the traditional model based on f-modes. While the difference may be small, it could have implications for our understanding of the Sun's structure and behavior. The findings are currently undergoing peer review.