News tagged with gravity

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Looking at quantum gravity in a mirror

Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. At this scale, new phenomena could arise. However, the Planck-scale ...

Mar 18, 2012
4.8 / 5 (27) 9 | with audio podcast

Quantum causal relations: A causes B causes A

A deeply rooted concept in everyday life is causality; the idea that events in the present are caused by events in the past and, in turn, act as causes for what happens in the future. Physicists from the ...

Oct 02, 2012
4.1 / 5 (27) 55 | with audio podcast

Heliophysics nugget: Riding the plasma wave

Throughout the universe more than 99 percent of matter looks nothing like what's on Earth. Instead of materials we can touch and see, instead of motions we intuitively expect like a ball rolling down a hill, ...

Jul 18, 2012
4.9 / 5 (18) 2 | with audio podcast

Is dark energy static or dynamic?

(Phys.org)—While hypothesized dark energy can explain observations of the universe expanding at an accelerating rate, the specific properties of dark energy are still an enigma. Scientists think that dark energy could take ...

Nov 12, 2012 feature
4.5 / 5 (19) 48 | with audio podcast