A renewed suggestion that dark energy may not be real—dispensing with 70% of the stuff in the universe—has reignited a longstanding debate. Dark energy and dark matter are theoretical inventions that ...

“The one sentence statement of general relativity is that ‘gravity is the curvature of spacetime,’” explains Dr. Sean Carroll, assistant professor of physics at the University of Chicago. “Really, the ...

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An artist's visualization of the star S0-2 as it passes by the supermassive black hole at the galactic center. As the star gets closer to the supermassive black hole, it experiences a gravitational ...

THE Gibson foundation lecture, delivered at the University of Glasgow by Prof. A. Einstein on June 20, consisted of a first-hand account of the mental struggles that precede the establishment of new ...

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When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. General relativity has withstood perhaps its toughest challenge to date. The theory, which Albert ...

Breakthroughs in science often begin with a simple question and years of tireless exploration. From the way tiny molecules slip through microscopic pores to the staggering behavior of matter near ...

Simulated universe: EAGLE collaboration, J Schaye et al 2015. MNRAS, CC BY-SA A renewed suggestion that dark energy may not be real — dispensing with 70% of the stuff in the universe — has reignited a ...