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Mars rover flyovers
Images taken by the Mars Reconnaissance Orbiter have been assembled to create these flyover animations of the Columbia Hills where the Spirit rover is exploring and the Opportunity rover at Victoria Crater.

 Spirit | Opportunity

Seas on Titan
NASA's Cassini spacecraft has found evidence for seas, likely filled with liquid methane or ethane, in the high northern latitudes of Saturn's moon Titan. This movie includes animation of the craft's encounters with Titan and an interview with insight into the science.

 Play

Atlas 5 launches STP 1
The United Launch Alliance Atlas 5 rocket with the U.S. military's Space Test Program 1 payload launches Cape Canaveral.

 Full Coverage

Atlantis rolls back
Battered by an intense hail storm six days earlier, space shuttle Atlantis retreated off launch pad 39A and returned to the cavernous Vehicle Assembly Building on March 4 to undergo thorough inspections and repairs.

 Video | Time-lapse

STS-112: ISS expansion
Atlantis made a week-long visit to the International Space Station in October 2002 that began the outward expansion of the outpost's truss backbone. Attachment of the 14.5-ton Starboard 1 segment was primary objective of the STS-112 mission. The astronauts tell the story of the flight in this post-flight movie.

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NASA budget hearing
This U.S. Senate space subcommittee hearing to examine NASA's proposed Fiscal Year 2008 budget features testimony from NASA Administrator Mike Griffin on February 28.

 Part 1 | Part 2

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A midnight plume on Io
NEW HORIZONS PHOTO RELEASE
Posted: March 14, 2007


Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
 
The Long Range Reconnaissance Imager (LORRI) on New Horizons captured another dramatic picture of Jupiter's moon Io and its volcanic plumes, 19 hours after the spacecraft's closest approach to Jupiter on Feb. 28, 2007. LORRI took this 75 millisecond exposure at 0035 Universal Time on March 1, 2007, when Io was 2.3 million kilometers (1.4 million miles) from the spacecraft.

Io's dayside is deliberately overexposed to bring out faint details in the plumes and on the moon's night side. The continuing eruption of the volcano Tvashtar, at the 1 o'clock position, produces an enormous plume roughly 330 kilometers (200 miles) high, which is illuminated both by sunlight and "Jupiter light."

The shadow of Io, cast by the Sun, slices across the plume. The plume is quite asymmetrical and has a complicated wispy texture, for reasons that are still mysterious. At the heart of the eruption incandescent lava, seen here as a brilliant point of light, is reminding scientists of the fire fountains spotted by the Galileo Jupiter orbiter at Tvashtar in 1999.

The sunlit plume faintly illuminates the surface underneath. "New Horizons and Io continue to astonish us with these unprecedented views of the solar system's most geologically active body" says John Spencer, deputy leader of the New Horizons Jupiter Encounter Science Team and an Io expert from Southwest Research Institute.

Because this image shows the side of Io that faces away from Jupiter, the large planet does not illuminate the moon's night side except for an extremely thin crescent outlining the edge of the disk at lower right. Another plume, likely from the volcano Masubi, is illuminated by Jupiter just above this lower right edge. A third and much fainter plume, barely visible at the 2 o'clock position, could be the first plume seen from the volcano Zal Patera.

As in other New Horizons images of Io, mountains catch the setting Sun just beyond the terminator (the line dividing day and night). The most prominent, seen as a bright vertical line, is the edge of a plateau about 4.5 kilometers (15,000 feet) high, similar in altitude to the Colorado Rockies. Io itself has a diameter of 3,630 kilometers (about 2,250 miles).

The image is centered at Io coordinates 4 degrees S, 165 degrees W. It has been processed to reduce contrast, in order to show details over the full 1000-to-1 brightness range of the original data.