OpinionSeptember 26, 2020
Is There Really Life on Venus? There’s Only One Way to Know for Sure
If phosphine detected on the planet next door is really a signature of alien biology, we can send a space probe to find out
Stories by David Grinspoon
David Grinspoon is a senior scientist at the Planetary Science Institute in Tucson, Ariz. In 2012 and 2013 he served as the U.S. Library of Congress's first chair of astrobiology while researching his book Earth in Human Hands: Shaping Our Planet's Future (Grand Central, 2016).
Space & PhysicsDecember 27, 2018
Pluto Is Far in the Rearview. Next Stop: Ultima Thule
NASA’s New Horizons is poised to arrive at the most distant object ever seen up close—and there could be more to come
EvolutionSeptember 1, 2016
Can Humans Outsmart Extinction?
If we do it right, we could become a long-term stabilizing force for the planet
Space & PhysicsNovember 1, 2005
Making Tracks on Mars
At last, some form of intelligence is altering the dusty face of our neighboring world