A specimen cab mounted on the Space Biosciences division’s 1.22-meter radius centrifuge with centrifuge in motion in N239A.

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

1.2 meter Multi-Mission Earth Entry Vehicle (MMEEV): Tethered and free flying test in 20 foot Vertical Spin Tunnel

Forty Meters from Entry to Victoria Crater Polar

Forty Meters from Entry to Victoria Crater Vertical

Final Eros Images: Range 1,150 meters 3,773 feet

Final Eros Images: Range 250 meters 820 feet

1.5 Meter Per Pixel View of Boulders in Ganges Chasma

Final Eros Images: Range 700 meters 2,300 feet

This image was taken by the Philae lander of the European Space Agency Rosetta mission when it was about 130 feet 40 meters above the surface of comet 67P/Churyumov-Gerasimenko during descent to the surface on Nov. 12, 2014.

Late night in the desert: Goldstone 230-foot 70-meter antenna tracks spacecraft day and night. This photograph was taken on Jan. 11, 2012. The Goldstone Deep Space Communications Complex is located in the Mojave Desert in California, USA.

The High Resolution Imaging Science Experiment camera on NASA Mars Reconnaissance Orbiter excavates ice in a twelve-meter-wide crater.

Goldstone 111.5-foot 34-meter Beam Waveguide tracks a spacecraft as it comes into view. The Goldstone Deep Space Communications Complex is located in the Mojave Desert in California, USA.

ISS027-E-019517 (6 April 2011) --- NASA astronaut Cady Coleman, Expedition 27 flight engineer, is pictured near a conductivity meter floating freely in the Tranquility node of the International Space Station.

The Apollo Telescope Mount (ATM), designed and developed by the Marshall Space Flight Center, served as the primary scientific instrument unit aboard the Skylab. The ATM contained eight complex astronomical instruments designed to observe the Sun over a wide spectrum from visible light to x-rays. This angle view is of an ATM contamination monitor meter mockup.

ISS040-E-086654 (1 Aug. 2014) --- NASA astronaut Steve Swanson, Expedition 40 commander, uses a sound level meter in the Destiny laboratory of the International Space Station.

ISS040-E-086653 (1 Aug. 2014) --- NASA astronaut Steve Swanson, Expedition 40 commander, uses a sound level meter in the Destiny laboratory of the International Space Station.

The Five-hundred-meter Aperture Spherical Telescope (FAST) is a radio telescope in China's Guizhou Province. When it is completed in September, it will be the world's second largest radio telescope, with a diameter of 500m.The largest telescope is the operating Russian RATAN-600, with a diameter of 576m. The image was acquired April 14, 2013, covers an area of 6.2 by 8.2 km, and is located at 25.7 degrees north, 106.9 degrees east. http://photojournal.jpl.nasa.gov/catalog/PIA20986

NASA Opportunity had driven 72.3 meters southward 237 feet that sol. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. This is a cylindric projection.

NASA Opportunity had driven 72.3 meters southward 237 feet that sol. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. This is a vertical projection.

NASA Opportunity had driven 72.3 meters southward 237 feet that sol. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. This is a polar projection.

shows the 15-foot 4.5-meter diameter heat shield when it was about 50 feet 16 meters from the spacecraft.

Seen from inside the dome, a new five-meter telescope is lowered into place. The tracking telescope is part of the Distant Object Attitude Measurement System (DOAMS) in Cocoa Beach, Fla., that provides optical support for launches from KSC and Cape Canaveral.

NASA Opportunity had driven 72.3 meters southward 237 feet on June 10. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. 3D glasses are necessary.

The 2.5-meter infrared telescope peers out from its cavity in the SOFIA airborne observatory during nighttime line operations testing at Palmdale, Calif.

The SOFIA airborne observatory's 2.5-meter infrared telescope peers out from its cavity in the SOFIA rear fuselage during nighttime line operations testing.

Scientists carefully examine data being received during nighttime line operations testing of the SOFIA airborne observatory's 2.5-meter infrared telescope.

KENNEDY SPACE CENTER, FLA. - This bird's-eye view of a high bay in the Orbiter Processing Facility (OPF) shows Space Shuttle Atlantis surrounded by the standard platforms and equipment required to process a Space Shuttle orbiter for flight. The high bay is 197 feet (60 meters) long, 150 feet (46 meters) wide, 95 feet (29 meters) high, and encompasses a 29,000-square-foot (2,694-meter) area. Platforms, a main access bridge, and two rolling bridges with trucks provide access to various parts of the orbiter. The next mission scheduled for Atlantis is STS-114, a utilization and logistics flight to the International Space Station.

KENNEDY SPACE CENTER, FLA. - This bird's-eye view of a high bay in the Orbiter Processing Facility (OPF) shows the open payload bay of Space Shuttle Discovery surrounded by the standard platforms and equipment required to process a Space Shuttle orbiter. The high bay is 197 feet (60 meters) long, 150 feet (46 meters) wide, 95 feet (29 meters) high, and encompasses a 29,000-square-foot (2,694-meter) area. The 30-ton (27-metric-ton) bridge crane (yellow device, right) has a hook height of approximately 66 feet (20 meters). Platforms, a main access bridge, and two rolling bridges with trucks provide access to various parts of the orbiter. In addition to routine servicing and checkout, the inspections and modifications made to enhance Discovery's performance and upgrade its systems were performed in the OPF during its recently completed Orbiter Major Modification (OMM) period.

Barringer Crater, also known as Meteor Crater, is a 1,300-meter 0.8 mile diameter, 174-meter 570-feet deep hole in the flat-lying desert sandstones 30 kilometers 18.6 miles west of Winslow, Arizona.

he SOFIA airborne observatory's 2.5-meter infrared telescope peers out from its cavity in the SOFIA rear fuselage during nighttime line operations testing.

These first radar images of 2015 TB145 from the National Science Foundation 1,000-foot 305-meter Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet 600 meters in diameter. The radar images were taken on Oct. 30, 2015, and the image resolution is 25 feet (7.5 meters) per pixel. The celestial object is more than likely a dead comet that has shed its volatiles after numerous passes around the sun. http://photojournal.jpl.nasa.gov/catalog/PIA20040

The 5000 meter 16,000 feet high Tibetan Plateau has been formed by the collision of the Indian subcontinent with central Asia.

Aquarius instrument, including 2.5 meter reflector, in the clean room at NASA Jet Propulsion Laboratory in Pasadena, Calif.

The NASA logo on Bldg. 703 at Armstrong Flight Research Center in Palmdale, Calif., is reflected in the telescope's 2.5-meter primary mirror.

Engineers test Aquarius 2.5 meter reflector in the clean room at NASA Jet Propulsion Laboratory in Pasadena, Calif.

Each of the six wheels for NASA Mars Science Laboratory rover is about half a meter 20 inches in diameter.

Prominently displayed in this image, Mt. Pinos, at 2,692 meters 8,831 feet is the highest peak in the Los Padres National Forest.

Yogi is a meter-size rock about 5 meters northwest of NASA Mars Pathfinder lander and was the second rock visited by the Sojourner Rover alpha proton X-ray spectrometer APXS instrument. 3D glasses are necessary to identify surface detail.

At the time NASA Terra spacecraft acquired this image, the Mississippi River had reached a level of 53 feet 16.2 meters, 3 feet 1 meter above the major flood stage. Flood water had already inundated parts of Vicksburg, Mississippi.

This 360-degree panorama shows evidence of a successful first test drive for NASA Curiosity rover; the rover made its first move, going forward about 15 feet 4.5 meters, rotating 120 degrees and then reversing about 8 feet 2.5 meters.

A drive of about 30 meters about 100 feet on Sept. 25, 2006 brought NASA Mars Exploration Rover Opportunity to within about 20 meters about 66 feet of the rim of Victoria Crater. 3D glasses are necessary to view this image.

At approximately 1.1 meters/pixel, this image is among the highest-resolution views MESSENGER has ever taken of the surface of Mercury. The final orbital correction maneuver (OCM) of the mission is planned for today, raising the periapsis from approximately 8 to 19 km (5 to 12 miles) and delaying the spacecraft's inevitable crash for one more week. Date acquired: April 23, 2015 Image Mission Elapsed Time (MET): 72114468 Image ID: 8382023 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 49.26° Center Longitude: 253.44° E Resolution: 1.1 meters/pixel Scale: This scene is approximately 560 meters (~1837 feet) across. http://photojournal.jpl.nasa.gov/catalog/PIA19434

NASA's SOFIA 747SP bearing a German-built 2.5-meter infrared telescope in its rear fuselage taxis up to NASA Dryden's ramp after a ferry flight from Waco, Texas. NASA's Stratospheric Observatory for Infrared Astronomy, or SOFIA, arrived at NASA's Dryden Flight Research Center at Edwards Air Force Base, Calif. on May 31, 2007. The heavily modified Boeing 747SP was ferried to Dryden from Waco, Texas, where L-3 Communications Integrated Systems installed a German-built 2.5-meter infrared telescope and made other major modifications over the past several years. SOFIA is scheduled to undergo installation and integration of mission systems and a multi-phase flight test program at Dryden over the next three years that is expected to lead to a full operational capability to conduct astronomy missions in about 2010. During its expected 20-year lifetime, SOFIA will be capable of "Great Observatory" class astronomical science, providing astronomers with access to the visible, infrared and sub-millimeter spectrum with optimized performance in the mid-infrared to sub-millimeter range.

DSS43 is a 70-meter-wide (230-feet-wide) radio antenna at the Deep Space Network's Canberra facility in Australia. It is the only antenna that can send commands to the Voyager 2 spacecraft. https://photojournal.jpl.nasa.gov/catalog/PIA23682

Mini Matterhorn is a 3/4 meter rock immediately east-southeast of NASA Mars Pathfinder lander. 3D glasses are necessary to identify surface detail.

Aquarius 2.5 meter composite reflector being fitted with gold foil covering in the clean room at NASA Jet Propulsion Laboratory in Pasadena, Calif.

This partial frame from an animation was generated using radar data collected by the National Science Foundation 1,000-foot 305-meter Arecibo Observatory in Puerto Rico.

Aquarius 2.5 meter reflector is hoisted before being attached to boom in the clean room at NASA Jet Propulsion Laboratory in Pasadena, Calif.

The Mini Matterhorn is a 3/4 meter rock immediately east-southeast of NASA Mars Pathfinder lander. 3D glasses are necessary to identify surface detail.

In this image from NASA Mars Odyssey, the late afternoon sun casts a shadow over a rim of Huygens Crater that 700 meters nearly 2,300 feet high.

This is a 3-foot 1-meter aperture main telescope located at the NASA Jet Propulsion Laboratory Optical Communications Telescope Laboratory ground station.

Surveyor 5 sitting in a 10-meter diameter crater. Surveyor 5 landed on Mare Tranquillitatis in September of 1967. This image was taken by NASA Lunar Reconnaissance Orbiter.

At more than 4,300 meters 14,000 feet , Mount Shasta is California tallest volcano and part of the Cascade chain of volcanoes extending south from Washington.

This chart graphs measurements made by the Dynamic Albedo of Neutrons DAN instrument on NASA Mars rover Curiosity against the distance the rover has driven, in meters.

NASA's Ingenuity Mars Helicopter took this color image from an altitude of 33 feet (10 meters) during its fifth flight on May 7, 2021. This was the helicopter's first one-way flight, and it settled down at a new landing location 423 feet (129 meters) south of its previous location at Wright Brothers Field. The contrast has been enhanced to show surface details. https://photojournal.jpl.nasa.gov/catalog/PIA24650

The 230-foot 70-meter DSS-14 antenna at Goldstone, Ca. obtained these radar images of asteroid 2015 TB145 on Oct. 31, 2015. Asteroid 2015 TB145 is depicted in eight individual radar images collected on Oct. 31, 2015 between 5:55 a.m. PDT (8:55 a.m. EDT) and 6:08 a.m. PDT (9:08 a.m. EDT). At the time the radar images were taken, the asteroid was between 440,000 miles (710,000 kilometers) and about 430,000 miles (690,000 kilometers) distant. Asteroid 2015 TB145 safely flew past Earth on Oct. 31, at 10:00 a.m. PDT (1 p.m. EDT) at about 1.3 lunar distances (300,000 miles, 480,000 kilometers). To obtain the radar images, the scientists used the 230-foot (70-meter) DSS-14 antenna at Goldstone, California, to transmit high power microwaves toward the asteroid. The signal bounced of the asteroid, and their radar echoes were received by the National Radio Astronomy Observatory's 100-meter (330-foot) Green Bank Telescope in West Virginia. The images achieve a spatial resolution of about 13 feet (4 meters) per pixel. http://photojournal.jpl.nasa.gov/catalog/PIA20043

This image of Mars was taken from the height of 33 feet (10 meters) by NASA's Ingenuity Mars helicopter during its sixth flight, on May 22, 2021. https://photojournal.jpl.nasa.gov/catalog/PIA24600

This image, taken by NASA's Dawn spacecraft, shows a portion of the southern hemisphere of dwarf planet Ceres from an altitude of 2,700 miles (4,400 kilometers). The image, with a resolution of 1,400 feet (410 meters) per pixel, was taken on June 25, 2015. The image was obtained on June 25, 2015 from an altitude of 2,700 miles (4,400 kilometers) above Ceres and has a resolution of 1,400 feet (410 meters) per pixel. http://photojournal.jpl.nasa.gov/catalog/PIA19616

Tour buses unload passengers at a new stop on the KSC tour that allows visitors to view Pad LC-39B. The tour road runs parallel to the crawlerway (just out of sight) that is used to transport the Space Shuttle vehicles to the pad. The length of the crawlerway from the Vehicle Assembly Building to Pad B is 6,828 meters (22,440 ft); its width overall is 40 meters (130 ft); each lane is 12 meters (40ft) with a 15-meter (50ft) median. This view looks south

This aerial view looking northeast shows a new stop (bottom) on the KSC bus tour that allow visitors to view Pad LC-39B (top). The tour stop is next to the crawlerway that is used to transport the Space Shuttle vehicles to the pad. The length of the crawlerway from the Vehicle Assembly Building to Pad B is 6,828 meters (22,440 ft); its width overall is 40 meters (130 ft); each lane is 12 meters (40ft) with a 15-meter (50ft) median.

The two prominent mesas in this view of Mars' "Murray Buttes" region from NASA's Curiosity Mars rover are about 260 feet (about 80 meters) apart. The top of the one on the left is about 26 feet (about 8 meters) above the surrounding plain and about 330 feet (about 100 meters) from Curiosity's position when the rover acquired this view on Aug. 18, 2016, during the 1,434th Martian day, or sol, of its work Mars. The component images of this mosaic were taken by the right-eye camera of the rover's Mast Camera (Mastcam), which has a telephoto lens. The mesa on the right is about 33 feet (about 10 meters) high. The top of it is about 270 feet (about 82 meters) from the rover. Upper Mount Sharp is the salmon-hued mound dominating the horizon between the scene's two prominent mesas. The left edge of this view is east-northeast from the rover; the right edge is southeast. The rover's location when it recorded this scene was the site it reached in its Sol 1433 drive. (See map at http://mars.nasa.gov/msl/multimedia/images/?ImageID=7999.) The scene is presented with a color adjustment that approximates white balancing, to resemble how the rocks and sand would appear under daytime lighting conditions on Earth. http://photojournal.jpl.nasa.gov/catalog/PIA20841

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

TIFFANY LOCKETT OVERSEES THE HALF SCALE (36 SQUARE METERS) ENGINEERING DEVELOPMENT UNIT (EDU) SOLAR SAIL DEPLOYMENT DEMONSTRATION IN PREPARATION FOR FULL SCALE EDU (86 SQUARE METERS) DEPLOYMENT IN APRIL, 2016

On Feb. 24, 2005, NASA Mars Exploration Rover Opportunity had driven about 73 meters 240 feet and reached the eastern edge of a small crater dubbed Naturaliste, 3D glasses are necessary to view this image.

NASA Dawn spacecraft obtained this image of the surface of asteroid Vesta with its framing camera on August 11, 2011. It was taken through the camera clear filter. The image has a resolution of about 260 meters per pixel.

Under the unflinching summer sun, workers at NASA Deep Space Network complex in Goldstone, Calif., use a crane to lift a runner segment that is part of major surgery on a giant, 70-meter-wide antenna.

NASA Curiosity Mars rover caught its own shadow in this image taken just after completing a drive of 329 feet 100.3 meters on the 547th Martian day, or sol, of the rover work on Mars Feb. 18, 2014.

On Feb. 19, 2005, NASA Mars Exploration Rover Opportunity had completed a drive of 124 meters 407 feet across the rippled flatland of the Meridiani Planum region. 3D glasses are necessary to view this image.

The suggested area in this observation from NASA Mars Reconnaissance Orbiter is characterized by a group of cones, shield-like features, and round mounds. They are a few hundred meters to kilometers in diameter but their heights are unknown.

An outcrop informally named Chester Lake is the second rock on the rim of Endeavour crater to be approached by NASA Mars Exploration Rover Opportunity for close inspection. Chester Lake is about 3 feet 1 meter across.

NASA Dawn spacecraft obtained this image of an unusual hill on asteroid Vesta with its framing camera on August 18, 2011. The image has a resolution of about 260 meters per pixel.

This global digital map of Saturn moon Iapetus was created using data taken during Cassini and Voyager spacecraft flybys. The map is an equidistant projection and has a scale of 641 meters 2,103 feet per pixel

NASA Dawn spacecraft obtained this image of terrestrial mountains on asteroid Vesta with its framing camera on Aug. 26, 2011. The image has a resolution of about 260 meters per pixel.

On Mar. 7, 2005, NASA Mars Exploration Rover Opportunity drove 35 meters 115 feet toward Vostok Crater that sol before taking images. 3D glasses are necessary to view this image.

NASA Dawn spacecraft obtained this image of various craters on asteroid Vesta with its framing camera on August 19, 2011. The image has a resolution of about 260 meters per pixel.

At the center of this view of an area of mid-latitude northern Mars, a fresh crater about 6 meters 20 feet in diameter holds an exposure of bright material, blue in this false-color image observed by NASA Mars Reconnaissance Orbiter.

This 360-degree stereo anaglyph of the terrain surrounding NASA Mars Exploration Rover Opportunity was taken on the rover 171st sol on Mars. Opportunity had driven 11 meters 36 feet into Endurance Crater. 3D glasses are necessary.

Death Valley, Calif., has the lowest point in North America, Badwater at 85.5 meters 282 feet below sea level. It is also the driest and hottest location in North America. This image is from NASA Terra spacecraft.

NASA Dawn spacecraft obtained this image with its framing camera on Aug. 20, 2011. This image was taken through the camera clear filter. The image has a resolution of about 260 meters per pixel.

NASA Opportunity had driven 62.5 meters 205 feet that sol, southward away from an outcrop called Penrhyn, which the rover had been examining for a few sols, and toward a crater called Adventure. This is a vertical projection.