Jupiter and Saturn meet for a rare close encounter

Jupiter and Saturn will appear closer in our sky on Dec. 21 than at any time in 400 years. My report for National Geographic.  

In The Precipice, Toby Ord sees humanity at a crossroads, and examines the many existential risks to our survival. My review for Undark magazine.

Comet NEOWISE may be the brightest comet for northern hemisphere skywatchers since Hale-Bopp back in 1997. My report for National Geographic.

Satellite "constellations" are crowding the skies, causing conflict between astronomers, governments, and businesses. My feature story for SkyNews magazine.

New experimental results suggest these long-sought subatomic particles could explain the universe’s missing mass. My report for Scientific American.

Long after the last stars burn out, long after the last black holes evaporate, white dwarfs can still explode in supernova-like blasts. These will be the last explosions — the …

Episode 23 of BookLab is now out! Our featured book is The Feeling of Life Itself by neuroscientist Christof Koch. Koch, who has spent decades studying the neural basis of …

In a Q&A for Undark, I speak with the author of How Contagion Works about the wider effects of the COVID-19 pandemic and the loss of normality.

In this Q&A for Undark, I speak with the author of Silent Travelers about the complex interplay between immigration and issues of health and medicine.

The human mind has long grappled with the nature of time. I contributed the text for this multimedia project — a "timeline of time" — for Quanta magazine, encompassing ideas …