Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

Astroparticle physics and particle cosmology represent converging disciplines that strive to understand the universe from its largest structures down to its most fundamental constituents. In this ...

Pulsars suggest that ultra–low-frequency gravitational waves are rippling through the cosmos. The signal seen by ...

Cosmologists face a dilemma. The rise of quantitative cosmology, exemplified by the release of new data in March on the cosmic microwave background from the WMAP satellite (see pp16-19; print version ...

A theory that unites quantum mechanics and general relativity claims that there was no first moment in time, but it still agrees with the predictions of classical cosmology. It's in the stars One of ...

For the past few years, a series of controversies have rocked the well-established field of cosmology. In a nutshell, the predictions of the standard model of the universe appear to be at odds with ...

“This year’s Nobel laureates in physics have painted a picture of a universe far stranger and more wonderful than we ever could have imagined.” Theoretical physicist Ulf Danielsson from Uppsala ...

Illustration of a set of real zeros of a graph polynomial (middle) and two Feynman diagrams. Credit: Max Planck Institute for Mathematics in the Sciences How can the behavior of elementary particles ...

Since 1991, UChicago’s Kavli Institute for Cosmological Physics has connected students from Chicago Public Schools with world ...

THIS YEAR’S Nobel prize for physics was split two ways, but both halves went for discoveries beyond Earth. One was for a finding that is, by astronomical standards, quite close by—a planet going ...