Conflict between theory and observational evidence suggests a missing ingredient in our understanding of the early Universe.

Conflict between theory and observational evidence suggests a missing ingredient in our understanding of the early Universe.
Oscillations measured in the orbits of a pair of black holes have once again helped confirm predictions made using general relativity.
More than 100 years on after Einstein’s 1921 Nobel Prize, some confusion remains around the committee’s reasons for omitting relativity.
A new approach to understanding gravity helps eliminate some discrepancies inherent in general relativity.
A modification to the theory of general relativity makes it consistent with observable astronomical data without the need for dark energy.
A new thought experiment explores the interface between quantum mechanics and general relativity using the transfer of information.
A 1913 manuscript by Albert Einstein and Michele Besso containing a precursor theory to general relativity sells at Paris auction.
The galaxy 9io9 is seen as it was when the cosmos was just 2.5 billion years old, making this the earliest galactic magnetic field ever observed.
The universe is ringing with gravity, but humanity is only just beginning to hear the nuance of this cosmic symphony.
Using quasars as ticking cosmic clocks, scientists took a journey back in time, discovering time progressed five times slower just after the Big Bang.