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Cecile LeBlanc
Image credit: NASA/JPL/Space Science Institute

Microbes on or within Saturn’s moon Enceladus?

“It sounds crazy but it could be snowing microbes on the surface of this little world,” a space scientist said of Saturn’s moon Enceladus.

Electric car

Electric cars need a clean energy source, study suggests

You might assume that air quality and health impacts are lower for electric vehicles than for conventional vehicles. Not necessarily so, this study reveals.

Image credit: NASA/JPL-Caltech

Stars are hot, right? Not this star.

Astronomers have found the coolest star – temperature-wise. This star is cooler than the human body.

Tamarisk leaf beetles at work

Tamarisk leaf beetles at work along the Colorado River

Years ago, when experts were first considering using beetles to kill tamarisk, I had doubts about introducing a non-native insect to control a non-native plant.

NASA/JPL-Caltech/R. Hurt

Billions of orphan Jupiters adrift in Milky Way galaxy?

Astronomers have discovered 10 free-floating, Jupiter-sized planets in our galaxy and say these objects might be more common than stars.

Credit: NASA/Tim Pyle

Geoff Marcy in Flagstaff on Kepler mission’s extraordinary planet discoveries

Famed planet-hunter Geoff Marcy spoke on May 2, 2011 about the Kepler space telescope and its 1,235 candidate planets. Does he think we’ll find intelligent life?

mercury_venus_moon

Mercury waltzes with bright planets at dawn May 2011

As Mercury reemerges as a morning object in May 2011, the solar system’s innermost planet will join up with the planets Jupiter, Venus and Mars in the eastern sky at dawn.

Image Credit: NASA/JPL-Caltech

Evidence for liquid water on the surface of Comet Wild-2

The first convincing evidence of liquid water on a comet comes from analysis of a sample of Comet Wild-2, returned to Earth by NASA’s Stardust space mission.

NASA/JPL-Caltech/UCLA/PSI

Vesta: An asteroid or not an asteroid?

The asteroid Vesta will soon get a visitor. The Dawn spacecraft will enter Vesta orbit in July, 2011. In the meantime, scientists and media are turning their gaze toward this little world.

Clouds near Titan's equator. Image credit: NASA/JPL/SSI

Forecast: Spring rains on Saturn’s moon

NASA’s Cassini spacecraft found evidence of spring rains around the equator of Saturn’s largest moon, Titan.