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Close-up photograph of a soap bubble with a spot on it that looks as though it must have come from a collision.
Abstractions blog

Physicists Study How Universes Might Bubble Up and Collide

January 25, 2021

Since they can’t prod actual universes as they inflate and bump into each other in the hypothetical multiverse, physicists are studying digital and physical analogs of the process.

Black holes of various sizes
black holes

Physicists Argue That Black Holes From the Big Bang Could Be the Dark Matter

September 23, 2020

It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. A new series of studies has shown how the theory can work.

The cyclic universe.
Abstractions blog

Big Bounce Simulations Challenge the Big Bang

August 4, 2020

Detailed computer simulations have found that a cosmic contraction can generate features of the universe that we observe today.

An interactive illustration of shapes hiding clocks.

Cosmic Triangles Open a Window to the Origin of Time

October 29, 2019

A close look at fundamental symmetries has exposed hidden patterns in the universe. Physicists think that those same symmetries may also reveal time’s original secret.

An illustration of a planet in front of a star.
Abstractions blog

Physics Nobel Honors Early Universe and Exoplanet Discoveries

October 8, 2019

The astronomers Michel Mayor and Didier Queloz won half of the prize for their 1995 discovery of a Jupiter-like planet orbiting a nearby star. The cosmologist James Peebles won the other half for work exploring the structure of the universe.


Physicists Debate Hawking’s Idea That the Universe Had No Beginning

June 6, 2019

A recent challenge to Stephen Hawking’s biggest idea — about how the universe might have come from nothing — has cosmologists choosing sides.

Abstractions blog

A New Test for the Leading Big Bang Theory

September 11, 2018

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


Physicists Hunt for the Big Bang’s Triangles

April 19, 2016

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


Why the Big Bang’s Light May Have a Tilt

June 30, 2015

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