UW News

David Fleming

September 19, 2019

Introducing VPLanet: A virtual planet simulator for modeling distant worlds across time

Image is illustration of several possibly habitable worlds

UW astrobiologist Rory Barnes and co-authors have created software that simulates multiple aspects of planetary evolution across billions of years, with an eye toward finding and studying potentially habitable worlds.

May 14, 2018

Orbital variations can trigger ‘snowball’ states in habitable zones around sunlike stars

An artist’s impression of Earth as a frigid "‘snowball" planet. New research from the University of Washington indicates that aspects of a planet's axial tilt or orbit could trigger such a snowball state, where oceans freeze and surface life is impossible.

Aspects of an otherwise Earthlike planet’s tilt and orbital dynamics can severely affect its potential habitability — even triggering abrupt “snowball states” where oceans freeze and surface life is impossible, according to new research from UW astronomers.

April 12, 2018

Circumbinary castaways: Short-period binary systems can eject orbiting worlds

This artist's concept illustrates Kepler-16b, the first planet known to orbit two stars - what's called a circumbinary planet. The planet, which can be seen in the foreground, was discovered by NASA's Kepler mission. New research from the University of Washington indicates that certain shot-period binary star systems eject circumbinary planets as a consequence of the host stars' evolution.

Planets orbiting “short-period” binary stars, or stars locked in close orbital embrace, can be ejected off into space as a consequence of their host stars’ evolution, according to new research from the University of Washington.