Einstein: Still right.
“The equivalence principle is the most important cornerstone of Einstein’s theory of general relativity,” says Sabine Hossenfelder, a physicist with the Frankfurt Institute for Advanced Studies in Germany who was not involved in the study. “We know [it] eventually has to be altered because it cannot in its present form take into account quantum effects.”
To help search for potential alterations, the MICROSCOPE experiment tracked the motion of nested metal cylinders — a 300-gram titanium outer cylinder and a 402-gram platinum inner one — as they orbited the Earth in near-perfect free fall. Any difference in the effect of gravity on the respective cylinders would cause them to move relative to each other.
From April 2016 to October 2018, the cylinders were shielded inside a satellite that protected them from the buffeting of solar winds, the minuscule pressure that sunlight exerts and the residual atmosphere at an orbital altitude of a little over 700 kilometers high. By performing the experiment in orbit, the researchers could compare the free fall of two different materials for extended periods without the confounding effects of vibrations or of objects nearby that could exert gravitational forces, says Manuel Rodrigues, a MICROSCOPE team member and physicist with the French aerospace lab ONERA in Palaiseau. “One of the lessons learned by MICROSCOPE is … that space is the best way to get an important improvement in the accuracy for this kind of test.
Over its two-and-a-half-year mission, MICROSCOPE found no sign of cracks in the equivalence principle, the new study reports. The finding builds on a previous interim report from the experiment
Argentina Últimas Noticias, Argentina Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
‘Ted Lasso’ Wins Big at Emmys 2022‘Ted Lasso’ shoots and scores—again, and again, and again.
Leer más »
Drew Barrymore tells ex Justin Long she’ll ‘always love’ him in tearful reunionThe “Drew Barrymore Show” host reflected on the “chaos” of her and Long’s on-again, off-again relationship from 2007 to 2010, calling it “hella fun.”
Leer más »
EssentialsDeep dives on L.A. fashion staples the city loves and that show love right back.
Leer más »
Handheld laser device can quickly diagnose astronaut health in spaceMedical sample collection in low Earth orbit could be repurposed for future moon and Mars missions.
Leer más »
Failure of Blue Origin's New Shepard a reminder that spaceflight is still hardEven if you're not going all the way to Earth orbit.
Leer más »
Space junk from a Chinese rocket is set to smash into Earth in this regionThe Long March 7A rocket launched on September 13, sending bits of space junk into orbit.
Leer más »