Release Images

Release No.: 2007-03
For Release: Wednesday, February 21, 2007 - 8:00am

Absence of Water in Distant Planet's Atmosphere Surprises Astronomers

HD 189733b

Astronomers have measured the first-ever infrared spectrum of two planets orbiting distant Sun-like stars. The planet, shown here in an artist's rendering, appears to be missing common molecules like water and methane. Astronomers speculate that these molecules are present but hidden behind a high layer of silicate clouds.

David A. Aguilar (CfA)