What's up in

big bang

Abstractions blog

A New Test for the Leading Big Bang Theory

Cosmologists have predicted the existence of an oscillating signal that could distinguish between cosmic inflation and alternative theories of the universe’s birth.

520px illustration for the bounce model theory
cosmology

How the Universe Got Its Bounce Back

Cosmologists have shown that it’s theoretically possible for a contracting universe to bounce and expand. The new work resuscitates an old idea that directly challenges the Big Bang theory of cosmic origins.

Illustration: window showing dark matter map
cosmology

Scientists Unveil New Inventory of Universe’s Dark Contents

The first major results from the Dark Energy Survey signal the start of a new era of cosmology.

Eva Silverstein at Stanford University
Thinking Places

Eva Silverstein’s Spirals and Strings

Daily bike rides, serendipitous interactions and long periods of solo thinking inspire this string cosmologist.

cosmology

Physicists Hunt for the Big Bang’s Triangles

The story of the universe’s birth — and evidence for string theory — could be found in triangles and myriad other shapes in the sky.

cosmology

Why the Big Bang’s Light May Have a Tilt

Scientists haven’t tested the Big Bang’s light for a revealing shift in 25 years. A new experiment aims to change that.

cosmology

Joint Dust Analysis Deflates Big Bang Signal

No definitive evidence for cosmic inflation is found, but support remains strong for the theory even as critics highlight its shortcomings as an explanation for how and why the universe began.

Reaching for the Multiverse
Infinity and Beyond: The Ultimate Test

Multiverse Collisions May Dot the Sky

Early in cosmic history, our universe may have bumped into another — a primordial clash that could have left traces in the Big Bang’s afterglow.

Infinity and Beyond: The Ultimate Test

In a Multiverse, What Are the Odds?

Testing the multiverse hypothesis requires measuring whether our universe is statistically typical among the infinite variety of universes. But infinity does a number on statistics.