NASA has selected two scientists from the Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder to be part of an astrobiology task force.

Here in southern New England, the land of four distinct seasons, spring is on our doorstep. This month's vernal equinox, the moment the sun crosses the equator from south to north, comes at 10:46 a.m.

If I were on Mars, how often would I see Earth transit the Sun? Steven RiserConyers, Georgia From Mars, Earth transits the ...