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Cosmic Microwave Background

David Freeman

LISTEN: The Accidental Discovery That Proved The Big Bang Theory | David Freeman | Posted 06.16.2014 | Science

Today the Big Bang theory is accepted as scientific fact. That wasn't the case a half-century ago, when a young radio astronomer named Robert W. Wilso...

Much-Ballyhooed Big Bang Finding Called Into Question

natureheader | Ron Cowen | Posted 06.19.2014 | Science

The astronomers who earlier this year announced that they had evidence of primordial gravitational waves jumped the gun, two independent analyses sugg...

Toward a Quantum Theory of Gravity? (Part 1)

Mario Livio | Posted 06.16.2014 | Science
Mario Livio

If confirmed, the recently detected potential ripples from the Big Bang represent an imprint on the cosmic microwave background by gravitational waves. Those gravitational waves are produced through a quantum process, providing, for the first time (again, if confirmed), evidence that gravity is governed by quantum mechanics. This point cannot be overemphasized.

Physicists' Golden Jubilee

David Kaiser | Posted 04.12.2014 | Science
David Kaiser

A handful of physics articles from 50 years ago have become central to the way physicists think about matter and the cosmos today -- so central, in fact, that we can sometimes forget that these foundational ideas even have a history.

Alien Life May Have Arisen WAY Earlier Than We Thought | Katia Moskvitch | Posted 02.04.2014 | Science

Earthlings may be extreme latecomers to a universe full of life, with alien microbes possibly teeming on exoplanets beginning just 15 million years af...

Secrets Of Universe's Birth May Lurk In New Data | Katia Moskvitch | Posted 02.01.2014 | Science

At first, there was nothing — complete and utter emptiness. Zero energy and zero matter. And then, out of this nothingness, the universe was born. ...

WATCH: Can 'Twist' Help Unlock Secrets Of Early Universe? | Megan Gannon | Posted 10.21.2013 | Science

Researchers have discovered a subtle twist in the primeval light that formed shortly after the universe came into being. They hope it can reveal new s...

What Shape Is The Universe?

natureheader | Ron Cowen | Posted 09.23.2013 | Science

We live in a lopsided universe: That has been a lesson that cosmologists have learned from examining the detailed structure of the radiation left over...

David Freeman

Probes Let Physicists Peer Further Back In Time Than Ever Before | David Freeman | Posted 09.11.2013 | Science

What was it like at the dawn of the universe? No one knows for sure. But with help from powerful space probes, physicists say they have now peered fur...

Who First Wondered: 'Why Is the Night Sky Dark?'

Mario Livio | Posted 09.29.2013 | Science
Mario Livio

The night sky, sprinkled with twinkling stars and the pale light of a silvery Moon, has fascinated humans since the dawn of history. But, why is it dark? If you think that the answer is: "Because you don't see the Sun," think again.

Cosmic 'Swirls' May Shed New Light On Birth Of Universe

| Adrian Cho | Posted 07.29.2013 | Science

Scientists have spotted swirling patterns in the radiation lingering from the big bang, the so-called cosmic microwave background (CMB). The observati...

A Few Fundamental Physics and Astronomy Questions for the Next Few Decades

Mario Livio | Posted 08.26.2013 | Science
Mario Livio

One may wonder which crucial questions will almost certainly occupy physicists and astronomers working together in the coming few decades. Here are a few of the remaining puzzles.

What Oldest Light Says About Birth Of Universe

Posted 05.28.2013 | Science

By: Clara Moskowitz Published: 05/28/2013 07:47 AM EDT on A map of the universe based on its oldest light is giving astronomers hope t...

Higgs Boson Could Challenge Leading Big Bang Theory

natureheader | Posted 04.16.2013 | Science

By Zeeya Merali When the European Space Agency’s Planck mission team unveiled the most detailed map yet of fluctuations in the cosmic microwave bac...

Pink Planets and Green Galaxies: Coloring the Universe

Megan Watzke | Posted 06.09.2013 | Science
Megan Watzke

2013-04-09-watzkepull.jpg Many of these images are spectacular, but what does it mean if the planets are pink or the galaxies are green? Are these colors 'real'?

Universe's New 'Baby Picture' May Reveal Details Of Big Bang

Posted 12.22.2012 | Science

By: Megan Gannon, News Editor Published: 12/21/2012 06:02 PM EST on Astronomers have released a new "baby picture" of the universe. The ...

Cara Santa Maria

WTF Is String Theory? | Cara Santa Maria | Posted 12.17.2012 | Science

Have you ever heard the term string theory and wondered WTF it means? When it comes to theoretical physics, it seems like there are a lot of larger-th...

How Can We Tell If a Multiverse Exists?

Mario Livio | Posted 02.12.2013 | Science
Mario Livio

Given that the different members of the multiverse are not causally connected, the question that emerges is whether there is a way to verify whether such a multiverse truly exists. As it turns out, there are at least two possible paths that could (at least in principle) test the multiverse scenario.

How Did Our Universe Begin?

Mario Livio | Posted 01.23.2014 | Science
Mario Livio

I'm convinced that most readers have at least heard that we believe our universe started with a "Big Bang" -- a very hot and dense state. Why do we think that?

Galaxies Exiting Universe Because Of Baffling 'Dark Flow' Force (VIDEO) | Posted 05.25.2011 | Technology

Galaxies traveling at million miles-per-hour speeds appear headed on one a one-way track toward the constellation Hydra, astronomers report Thursday,...