Most models for the overall shape and geometry of the Universe—including some exotic ones—are compatible with the latest cosmic observations.

The standard cosmological model predicts statistically isotropic cosmic microwave background (CMB) fluctuations. However, several summary statistics of CMB isotropy have anomalous values,...

Non-trivial spatial topology of the Universe may give rise to potentially measurable signatures in the cosmic microwave background. We explore different machine learning approaches to classify...

In a new Physical Review Letters (PRL) study, scientists explore the possibility of nontrivial or exotic topologies in the universe for explaining some of the anomalies seen in Cosmic Microwave...

Rather than stretching to infinity and beyond, the universe may have a topology that can eventually be mapped

Single-field models of accelerated expansion with nearly flat potentials, despite being able to provide observationally viable explanations for the early-time cosmic inflation and the late-time...

Physicists haven’t yet ruled out the possibility that the universe has a complicated topology in which space loops back around on itself.

If the Universe has non-trivial spatial topology, observables depend on both the parameters of the spatial manifold and the position and orientation of the observer. In infinite Euclidean space,...

Provided to YouTube by Sony ClassicalSonata No. 1 for Cello and Piano, "The Roots, a Tale Sonata": Finale, allegro molto ma giusto, presto con fuoco · Ezio B...

The shortest distance around the Universe through us is unlikely to be much larger than the horizon diameter if microwave background anomalies are due to cosmic topology. We show that...

Nature - The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark energy has changed over 11 billion years, which would alter ideas about how...

Upcoming galaxy surveys will allow us to probe the growth of the cosmic large-scale structure with improved sensitivity compared to current missions, and will also map larger areas of the sky....

Sound comes from the merging of supermassive black holes across the universe, according to scientists

In a field filled with very clever people, Nick was one of the cleverest and also one of the nicest,

It's easy to envisage other universes, governed by slightly different laws of physics, in which no intelligent life, nor indeed any kind of organized complex systems, could arise. Should we therefore...

Scalar-tensor theories with the shift symmetries required by light scalars are well-explored modifications to GR. For these, two-derivative scalar self-interactions usually dominate at low...

ABSTRACT. To exploit the power of next-generation large-scale structure surveys, ensembles of numerical simulations are necessary to give accurate theoreti

We argue that dark energy with multiple fields is theoretically well-motivated and predicts distinct observational signatures, in particular when cosmic acceleration takes place along a trajectory...

Meeting at London’s Royal Society will scrutinise basic model first formulated in 1922 that universe is a vast, even expanse with no notable features