The Expansion of the Universe Raises Unnerving Questions

Princeton Cosmologist Jo Dunkley Explains Why We Are Always Updating Our Understanding of How We Got Here

Jo Dunkley is a leading researcher into the origins and evolution of the universe and professor of physics and astrophysical sciences at Princeton University. In her work, Dunkley uses the Atacama Cosmology Telescope to probe the history of the universe and study the ancient radiation known as Cosmic Microwave Background. She has received numerous awards and honors, including the James Clerk Maxwell Medal, the Royal Society Rosalind Franklin Award, and, most recently, the New Horizons in Physics Prize. In October 2019, following the publication of her book Our Universe: An …

The Poetic Clarity of That ‘Pale Blue Dot’ | Zocalo Public Square • Arizona State University • Smithsonian

The Poetic Clarity of That ‘Pale Blue Dot’

Through Photography, Science Has Given Humanity a Sense of Itself

When the Voyager 1 space probe was launched in 1977, it was equipped with a camera to chronicle its travels through the cosmos. One of the images that astronomer Carl …

When Numeracy Superseded Literacy—and Created the Modern World

The Renaissance's Embrace of Numbers Revolutionized Commerce, Science, and Art

In 1025, two learned monks, Radolph of Liége and Ragimbold of Cologne, exchanged several letters on mathematical topics they had encountered while reading a manuscript of the sixth-century Roman philosopher, …

Confessions of an Eclipse Chaser

For Four Decades I've Traveled the World, Tracking the 'Eye of God'

On August 21st this year, I will log my 26th solar eclipse and my 17th total solar eclipse. August 21st is when parts of the contiguous United States will fall …

Arrival’s Aliens Reflect How We Treat One Another

We React With Distrust and Paranoia, While They (Literally) Rise Above

In the recently released film Arrival, Earth is visited by an intelligent alien race, the heptapods, and the contact forever changes humanity’s sense of place in the cosmos. The movie …

Even in Deep Space, There Are Shades of Black

How a Planet Hunter Finds Faint Objects in a Sea of Darkness

In my line of work, I stare at shades of black.

My work starts on dark, black nights, when there is no moon or reflection from it. The telescopes I …