Dava Sobel
Freelance

Dava Sobel wrote Longitude, which won the 1997 British Book of the Year award, and A More Perfect Heaven: How Copernicus Revolutionized the Cosmos.

Written by Dava Sobel

Illustration by Thomas Danthony

Essay/
Cosmology
The wait of the world

Ditching the leap second would mean decoupling clock time from the Earth’s rotation – from day and night itself

Dava Sobel

I’m your Venus: last chance this century to catch Venus separating itself from the sun. Photo by Patrick Fraser

Essay/
Astronomy
Venus still beguiles

Astro-tourism, air travel and nifty apps gave Venus’s 2012 transit a democratic edge over astronomy’s historic heroism

Dava Sobel