Advancing Earth System Science to meet the challenges of climate and environmental change. | Earth: Swirls along an Ice Highway ▲ Sea water off the east coast of Greenland looked a bit like marbled paper in October 2012. » More info on this image |
Seeking to understanding the Sun and its interactions with the Earth and solar system. | Sun: Magnetic Arcs ▲ An M5 flare (medium-size) associated with a coronal mass ejection generated a fairly robust radiation storm (May 22-23, 2013). The outburst originated from active region right near the right edge of the Sun. After the eruption, cascades of magnetic loops spun up above the area as the magnetic fields tried to reorganize themselves. When viewed in profile, they put on a marvelous display of solar activity. The images are a combination of two wavelengths of extreme ultraviolet light (at 171 and 304 Angstroms). Credit: NASA's Solar Dynamics Observatory. » More info on this image |
Ascertaining the content, origin and evolution of the solar system and the potential for life elsewhere. | Saturn: The Face of Beauty ▲ The gas planet's subtle northward gradation from gold to azure is a striking visual effect that scientists don't fully understand. » More info on this image |
Discovering how the universe works, exploring how the universe began and evolved, and searching for Earth-sized planets. | Nebula: Hubble Sees a Horsehead of a Different Color ▲ Hubble's infrared vision shows the horse in a new light. The nebula, shadowy in optical light, appears transparent and ethereal when seen at infrared wavelengths. » More info on this image |
James Webb Space Telescope: A large space telescope, optimized for infrared wavelengths. | Primary Mirrors: First six of 18 ▲ The first six flight ready primary mirror segments are prepped to begin final cryogenic testing at NASA's Marshall Space Flight Center. » More info on this image |
Interactive Satellite Tracker (iSAT) is a browser based application that allows you to track all NASA Science Satellite Missions, as well as other satellites. Enjoy this free tool at home or in the classroom! | |
Image of the Day
On Aug. 3, 2004, NASA’s Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) spacecraft began a seven-year journey, spiraling through ...
Interactive Satellite Tracker
Interactive Satellite Tracker (iSat) is a browser based application that allows you to track all NASA Science Satellite Missions, as well as other satellites. Enjoy this free tool at home or in the classroom!
Latest ScienceCast
Astronomers have figured out how to use the gravity of distant galaxies to bend light and magnify images, allowing them to see deeper into the cosmos than ever before.
Watch our latest ScienceCast: A Telescope Bigger than a Galaxy