Earth's oceans are—like space—a largely unexplored frontier. Relatively few humans have explored either place, using specialized life-support equipment. Unlike space,…
If the periodic table listed the elements in order of their importance to life, then oxygen might bully its way…
The early Earth didn't have many chemicals needed for life on its surface, but they were present in asteroids and…
Aging stars that become red giants increase their luminosity and can wreak havoc on planets that were once in the…
Does life appear independently on different planets in the galaxy? Or does it spread from world to world? Or does…
It’s a classic statement shared at many public outreach events…’we are made of stardust’. It is true enough that the…
The number of near misses, false starts, and legitimate disasters that have befallen our species since the day we took…
We do not yet know how, where, or why life first appeared on our planet. Part of the difficulty is…
All modern life shares a robust, hardy, efficient system of intertwined chemicals that propagate themselves. This system must have emerged…
JWST has shown that it can detect various chemicals in the atmospheres of other worlds, from water vapor to carbon…