A spacecraft that revealed details of the hidden tapestry of the infant cosmos has had its last hurrah. Since its launch, Planck has helped scientists settle on a detailed, cohesive story of the ...

Quantum gravity theory is untested experimentally. Could it be tested with tabletop experiments? While the common feeling is pessimistic, a detailed inquiry shows it possible to sidestep the onerous ...

The highly anticipated update of the analysis of data from the European Space Agency’s Planck satellite starts with a first paper published in Astronomy and Astrophysics, which already holds in store ...

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. Now scientists have proposed a new quantum experiment ...

In other ways, though, the new Planck data quashes hopes for bizarre new physics. The findings provide zero evidence for cosmic strings, which might be expected under string theory, and can say almost ...

Kelen Tuttle, writer and editor for the Kavli Foundation, contributed this article to Space.com's Expert Voices: Op-Ed & Insights. From its orbit 930,000 miles above Earth, the Planck satellite spent ...