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Big Bang

A theoretical model of the “birth” of the observable universe, which suggests that the universe began as a rapid expansion of space and time from a single point, or singularity.

Radio Programs

PRIzM The challenges of radio astronomy December 3, 2020

Serendipity “Lucky” astronomical discoveries November 3, 2020

Neutrinos Tiny particles that change “flavors” March 5, 2020

Early Birth Giving birth to dark matter March 4, 2020

Cosmic Strings Stringing along the universe September 17, 2019

Hubble Constant Measuring the expanding universe June 13, 2019

Subatomic Astronomy Going small to study the universe January 31, 2019

Stretching Out The universe stretches out December 10, 2018

Making Lithium Making an important element August 30, 2018

Seeing Deep Looking deep into the early universe November 21, 2017

Making Gold Making gold in the oddest of places November 6, 2017

Matter vs. Antimatter The matter of antimatter May 16, 2017

Making Elements Brewing up a universe of elements March 6, 2017

Dark Skies Why the night sky is dark January 6, 2017

More Reionization An early light in the young universe November 4, 2016

Reionization Giving the universe a charge November 3, 2016

More Hydrogen The most abundant element in the universe May 29, 2016

Featured Images

This diagram depicts the 13.8-billion-year history of the universe

Zero to 13.8 Billion March 14, 2018

A graphical history of the universe

End of the Dark Ages November 3, 2016

COBE view of the cosmic microwave background

Afterglow November 18, 2014

The Planck space telescope and its view of the cosmic microwave background

Going Dark October 24, 2013

Cosmic Inflation

A Big Push June 15, 2011

The Milky Way galaxy and the afterglow of the Big Bang make up this all-sky imag

A Little of Everything July 6, 2010