Picture of the Day

A new approach to SETI: Targeting alien polluters

In this artist's conception, the atmosphere of an Earth-like planet displays a brownish haze - the result of widespread pollution. New research shows that the upcoming James Webb Space Telescope potentially could detect certain pollutants, specifically CFCs, in the atmospheres of Earth-sized planets orbiting white dwarf stars.

Visit Website | Image credit: Christine Pulliam (CfA)