HD - NASA's Jet Propulsion Laboratory

View Mars this month, and get a preview of great Mars views in 2016, the best since 2005!

As we honor the retirement of Director Charles Elachi, we look back at the JPL achievements of the past 15 years.

Earth's land and ocean currently absorb about half of all carbon dioxide emissions from the burning of fossil fuels, but it's uncertain whether the planet can keep this up in the future. NASA's Earth science program works to improve our understanding of how carbon absorption and emission processes work in nature and how they could change in a warming world with increasing levels of emissions from human activities.

See all the phases of the moon, by day and by night! Find out why the same side of the moon always faces the Earth, and look for the areas where all six of the Apollo missions landed.

JPL scientist Marina Brozovic explains how radar will be used to study asteroid 2015 TB145 when it safely passes Earth on Oct. 31, 2015.

On Oct. 28, 2015, NASA's Cassini spacecraft will take the deepest dive ever through the plume of Saturn's moon Enceladus. Scientists hope this close flyby will shed light on what's happening beneath the moon's icy surface.

To celebrate the 100th episode of What's Up, here's our top ten favorite celestial targets you can view this month.

Researchers at NASA's Jet Propulsion Laboratory are developing the Buoyant Rover for Under-Ice Exploration, a technology that could one day explore oceans under the ice layers of planetary bodies. The prototype was tested in arctic lakes near Barrow, Alaska.

Black and white and color animations made with new data from NASA's Dawn spacecraft highlight the topography of Occator crater on Ceres.

A robot concept called Hedgehog would explore the microgravity environment of comets and asteroids by hopping and rolling around on them.