Two baby alligators are in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

Three baby alligators are in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

A baby alligator is in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

Juvenile alligators sit at the shoreline of a marshy waterway at NASA's Kennedy Space Center in Florida. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians and reptiles call Kennedy and the wildlife refuge home.

A baby alligator is in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

A large alligator is in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

Juvenile alligators gather at the shoreline of a marshy waterway at NASA's Kennedy Space Center in Florida. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians and reptiles call Kennedy and the wildlife refuge home.

A large alligator is in view in a waterway at NASA’s Kennedy Space Center in Florida on March 9, 2023. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

NASA's Curiosity Mars rover used its Mast Camera, or Mastcam, to survey these wind-sharpened rocks, called ventifacts, on March 15, 2022, the 3,415th Martian day, or sol, of the mission. The team has informally described these patches of ventifacts as "gator-back" rocks because of their scaly appearance. Ventifacts chewed up Curiosity's wheels earlier in the mission. Since then, rover engineers have found ways to slow wheel wear, including a traction control algorithm. They also plan rover routes that avoid driving over such rocks, including these latest ventifacts, which are made of sandstone &ndsh; the hardest type of rock Curiosity has encountered on Mars. These rocks form the surface of the "Greenheugh Pediment," a broad, sloping plain in the foothills of Mount Sharp. The floor of Gale Crater is visible along the edges of the mosaic. When Curiosity's team saw the gator-back rocks, they ultimately decided to turn the rover around and take an alternative path to continue climbing Mount Sharp, a 3.4-mile-tall (5.5-kilometer-tall) mountain that Curiosity has been ascending since 2014. As it climbs, Curiosity is able to study different sedimentary layers shaped by water billions of years ago. These layers help scientists understand whether microscopic life could have survived in the ancient Martian environment. https://photojournal.jpl.nasa.gov/catalog/PIA25175

An adult alligator suns himself along the shoreline of a waterway at NASA's Kennedy Space Center in Florida. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians and reptiles call Kennedy and the wildlife refuge home.

Alligators sun themselves along the shoreline of waterway at NASA's Kennedy Space Center in Florida. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians and reptiles call Kennedy and the wildlife refuge home.

NASA's Curiosity Mars rover used its Mast Camera, or Mastcam, to take this 360-degree panorama on March 23, 2022, the 3,423th Martian day, or sol, of the mission. The team has informally described the wind-sharpened rocks seen here as "gator-back" rocks because of their scaly appearance. Wind-sharpened rocks like these are called ventifacts, and are responsible for chewing up Curiosity's wheels earlier in the mission. Since then, rover engineers have found ways to slow wheel wear, including a traction control algorithm. They also plan rover routes that avoid driving over such rocks, including these latest ventifacts, which are made of sandstone – the hardest type of rock Curiosity has encountered on Mars. These rocks form the surface of the "Greenheugh Pediment," a broad, sloping plain in the foothills of Mount Sharp. The floor of Gale Crater is visible along the edges of the mosaic. When Curiosity's team saw the gator-back rocks, they ultimately decided to turn the rover around and take an alternative path to continue climbing Mount Sharp, a 3.4-mile-tall (5.5-kilometer-tall) mountain that Curiosity has been ascending since 2014. As it climbs, Curiosity is able to study different sedimentary layers shaped by water billions of years ago. These layers help scientists understand whether microscopic life could have survived in the ancient Martian environment. https://photojournal.jpl.nasa.gov/catalog/PIA25176

iss068e022320 (11/15/2022) --- A view of the Gator GATSBY investigation ICE Cube taken aboard the International space Station (ISS) during installation. Gator GrAvitational effecTS on the faraday instaBilitY (Gator GATSBY) investigates pattern formation at the interface of two liquids, when periodic forcing is applied to the fluid system.

KENNEDY SPACE CENTER, FLA. - An alligator spotted near the Launch Pad 39 area at NASA’s Kennedy Space Center raises its head above the water. Nearly 5,000 alligators can be found in canals, ponds and waterways throughout the Center and the surrounding Merritt Island National Wildlife Refuge. American alligators feed and rest in the water, and lay their eggs in dens they dig into the banks. The young alligators spend their first several weeks in these dens. The Wildlife Refuge encompasses 92,000 acres that are a habitat for more than 331 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles.

KENNEDY SPACE CENTER, FLA. - An alligator near the Launch Pad 39 area at NASA’s Kennedy Space Center appears not very happy being spotted in the water. Nearly 5,000 alligators can be found in canals, ponds and waterways throughout the Center and the surrounding Merritt Island National Wildlife Refuge. American alligators feed and rest in the water, and lay their eggs in dens they dig into the banks. The young alligators spend their first several weeks in these dens. The Wildlife Refuge encompasses 92,000 acres that are a habitat for more than 331 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles.

KENNEDY SPACE CENTER, FLA. - In a pond near the Launch Pad 39 area at NASA’s Kennedy Space Center, an alligator hides in the shadows under overhanging branches. Nearly 5,000 alligators can be found in canals, ponds and waterways throughout the Center and the surrounding Merritt Island National Wildlife Refuge. American alligators feed and rest in the water, and lay their eggs in dens they dig into the banks. The young alligators spend their first several weeks in these dens. The Wildlife Refuge encompasses 92,000 acres that are a habitat for more than 331 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles.

CAPE CANAVERAL, Fla. - A water lily stretches above the water in a canal on NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, consisting of 140,000 acres. The Refuge provides a wide variety of habitats: coastal dunes, saltwater estuaries and marshes, freshwater impoundments, scrub, pine flatwoods, and hardwood hammocks that provide habitat for more than 1,500 species of plants and animals. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. - An alligator looks warily at the photographer who's spotted the familiar head in a drainage canal on NASA's Kennedy Space Center in Florida. A protected species, alligators can be spotted in the drainage canals and other waters surrounding KSC. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. - On NASA's Kennedy Space Center in Florida, an alligator from a nearby drainage canal stares at the photographer. A protected species, alligators can be spotted in the drainage canals and other waters surrounding KSC. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- A gator sunbathes just north of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Kennedy coexists with the Merritt Island National Wildlife Refuge, habitat to more than 310 species of birds, 25 mammals, 117 fish and 65 amphibians and reptiles. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Alligators gather in the shallow water of a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Several alligators float at the surface of a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – A manatee's nose breaks the surface of the water in a creek at NASA's Kennedy Space Center in Florida. Several alligators linger in the background. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Taking a mid-day stroll, an alligator crosses the Saturn Causeway at NASA's Kennedy Space Center in Florida in front of the Astrovan with STS-127 crew members aboard. The crew was on its way to Launch Pad 39A for a simulated launch countdown, part of the terminal countdown demonstration test. Alligators can be spotted in the drainage canals and other waters surrounding Kennedy. They occasionally venture onto roads seeking new environs or mates. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – An alligator patrols the water in NASA's Kennedy Space Center in Florida. A protected species, alligators can be spotted in the drainage canals and other waters surrounding Kennedy. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Ben Smegelsky

CAPE CANAVERAL, Fla. – A parent and a baby manatee come up for air beneath the branches of a mangrove in a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – A Florida redbelly turtle heads from shore into the water in NASA's Kennedy Space Center in Florida. The redbelly turtle's range is the Florida peninsula and Apalachicola area of the panhandle. They are active year-round and can often be seen basking on logs or floating mats of vegetation. Adults prefer a diet of aquatic plants. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Ben Smegelsky

CAPE CANAVERAL, Fla. – The NASA Railroad track borders a creek that often serves as a popular gathering place for alligators and manatees at Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – An alligator glides through the shallow water of a creek at NASA's Kennedy Space Center. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Distinctive with its black and white coloring and very long red legs trailing behind is a black-winged stilt. The bird is a common sight around Kennedy, which shares a boundary with the Merritt Island National Wildlife Refuge. The marshes and open water of the refuge provide wintering areas for 23 species of migratory waterfowl, as well as a year-round home for great blue herons, great egrets, wood storks, cormorants, brown pelicans and other species of marsh and shore birds. Photo credit: NASA/Ben Smegelsky

CAPE CANAVERAL, Fla. – Taking a mid-day stroll, an alligator heads for the woods after crossing the Saturn Causeway at NASA's Kennedy Space Center in Florida in front of the Astrovan with STS-127 crew members aboard. The crew was on its way to Launch Pad 39A for a simulated launch countdown, part of the terminal countdown demonstration test. Alligators can be spotted in the drainage canals and other waters surrounding Kennedy. They occasionally venture onto roads seeking new environs or mates. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In a creek at NASA's Kennedy Space Center in Florida, a manatee in the foreground comes up for air, unbothered by a group of nearby alligators. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Alligators gather in the shallow water of a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – A parent and a baby manatee come up for air beneath the branches of a mangrove in a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Black vultures gather near woods in NASA's Kennedy Space Center in Florida. They are accompanied by a young white ibis. Ranging across the south and southeast, black vultures scavenge for both carrion and weak, sick or unprotected prey. They differ from turkey vultures in that they depend on vision to find food. They can be found all around Kennedy, on the ground or any higher landing spot, from buildings to utility poles. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Ben Smegelsky

CAPE CANAVERAL, Fla. – A manatee raises its eyes and nose above the waterline in a creek at NASA's Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

CAPE CANAVERAL, Fla. – Manatees and alligators gather in a creek at Kennedy Space Center's Launch Complex 39 area. In the background from left to right are the Rotation, Processing and Surge Facility, mobile launcher and Vehicle Assembly Building. The center shares a boundary with the Merritt Island National Wildlife Refuge, which encompasses 140,000 acres that provide a habitat for more than 330 species of birds, 31 mammals, 117 fishes, and 65 amphibians and reptiles. Photo credit: NASA/Daniel Casper

S129-E-007227 (21 Nov. 2009) --- Astronaut Randy Bresnik (near the Columbus laboratory), STS-129 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, eight-minute spacewalk, Bresnik and astronaut Mike Foreman (out of frame), mission specialist, installed a Grappling Adaptor to On-Orbit Railing Assembly, or GATOR, on the Columbus laboratory. GATOR contains a ship-tracking antenna system and a HAM radio antenna. They relocated a floating potential measurement unit that gauges electric charges that build up on the station, deployed a Payload Attach System on the space-facing side of the Starboard 3 truss segment and installed a wireless video system that allows spacewalkers to transmit video to the station and relay it to Earth.

S129-E-007789 (21 Nov. 2009) --- Astronaut Mike Foreman, STS-129 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, eight-minute spacewalk, Foreman and astronaut Randy Bresnik (out of frame), mission specialist, installed a Grappling Adaptor to On-Orbit Railing Assembly, or GATOR, on the Columbus laboratory. GATOR contains a ship-tracking antenna system and a HAM radio antenna. They relocated a floating potential measurement unit that gauges electric charges that build up on the station, deployed a Payload Attach System on the space-facing side of the Starboard 3 truss segment and installed a wireless video system that allows spacewalkers to transmit video to the station and relay it to Earth.

S129-E-007756 (21 Nov. 2009) --- Astronaut Randy Bresnik (near the Columbus laboratory), STS-129 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, eight-minute spacewalk, Bresnik and astronaut Mike Foreman (out of frame), mission specialist, installed a Grappling Adaptor to On-Orbit Railing Assembly, or GATOR, on the Columbus laboratory. GATOR contains a ship-tracking antenna system and a HAM radio antenna. They relocated a floating potential measurement unit that gauges electric charges that build up on the station, deployed a Payload Attach System on the space-facing side of the Starboard 3 truss segment and installed a wireless video system that allows spacewalkers to transmit video to the station and relay it to Earth.

Mechanical technician, Thomas Huber, tightens bolts on the Ocean Color Instrument (OCI) is installed onto the Ground Support Equipment Application for Tilt or Rotation (GAToR) made by Newton Engineering. GAToR will allow engineers to tilt and rotate OCI in different orientations for further testing prior to integration onto the PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) spacecraft. OCI is a highly advanced optical spectrometer that will be used to measure properties of light over portions of the electromagnetic spectrum. It will enable continuous measurement of light at finer wavelength resolution than previous NASA satellite sensors, extending key system ocean color data records for climate studies. OCI is PACE's (Plankton, Aerosol, Cloud, ocean Ecosystem) primary sensor built at Goddard Space Flight Center in Greenbelt, MD.

Two large alligators sun themselves on the sand near the NASA Causeway at Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

A large alligator basks in the intercoastal waterway near the NASA Causeway at Kennedy Space Center in Florida. The center shares a boundary with the Merritt Island National Wildlife Refuge. The refuge is home to more than 65 amphibian and reptile species, along with 330 native and migratory bird species, 25 mammal and 117 fish species.

CAPE CANAVERAL, Fla. -- Alligators bask in the warm sun on the banks of the Launch Complex 39 turn basin at NASA's Kennedy Space Center in Florida. Cool weather frequently brings the gators out of the water. A protected species, alligators can be spotted in the drainage canals and other waters surrounding Kennedy. The center shares a boundary with the Merritt Island Wildlife Nature Refuge, which is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- Two gators sunbathe just north of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Kennedy coexists with the Merritt Island National Wildlife Refuge, habitat to more than 310 species of birds, 25 mammals, 117 fish and 65 amphibians and reptiles. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. -- A gator slinks through tall grass just north of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Kennedy coexists with the Merritt Island National Wildlife Refuge, habitat to more than 310 species of birds, 25 mammals, 117 fish and 65 amphibians and reptiles. Photo credit: NASA/Frankie Martin

Thermal blanket technicians, Aldine Joseph-pierre and Paula Cain, adjust blankets on the Ocean Color Instrument (OCI) in preparation for metrology on the Ground Support Equipment Application for Tilt or Rotation (GATOR). OCI is a highly advanced optical spectrometer that will be used to measure properties of light over portions of the electromagnetic spectrum. It will enable continuous measurement of light at finer wavelength resolution than previous NASA satellite sensors, extending key system ocean color data records for climate studies. OCI is PACE's (Plankton, Aerosol, Cloud, ocean Ecosystem) primary sensor built at Goddard Space Flight Center in Greenbelt, MD.

KENNEDY SPACE CENTER, FLA. -- Young alligators share grassy space beside a body of water on KSC. The Center shares a boundary with the Merritt Island National Wildlife Refuge, which harbors nearly 5,000 American alligators. Some of those gators can be seen in the canals and ponds around KSC. The refuge is also habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. The open water provides wintering areas for 23 species of migratory waterfowl and a year-round home for great blue herons, great egrets, wood storks, cormorants, brown pelicans and other species of marsh and shore birds.

NASA's Curiosity Mars rover captured this 360-degree panorama while parked below Gediz Vallis Ridge (the hill-like slope at right). After three attempts over the course of three years, the rover finally reached the ridge on its fourth try on Aug. 14, 2023, the 3,923rd Martian day, or sol, of the mission. On Aug. 19, Curiosity's Mastcam took the 136 individual images that were stitched together into this mosaic after being sent back to Earth. The color has been adjusted to match lighting conditions as the human eye would see them on Earth. Gediz Vallis Ridge was one of the last features to form on Mount Sharp, the 3-mile-tall (5-kilometer-tall) mountain that Curiosity has been ascending since 2014. The ridge preserves a record of one of the last wet periods seen on this part of Mars. Reaching the ridge was no easy feat: previous forays were stymied by knife-edged "gator-back" rocks and too-steep slopes. Arriving after one of the most difficult climbs the mission has ever faced, Curiosity spent 11 days at the ridge. It then departed to ascend higher up the mountain, where the rover will investigate Gediz Vallis Channel, through which water flowed some 3 billion years ago, carrying rocks and debris that piled up to form the ridge. https://photojournal.jpl.nasa.gov/catalog/PIA26019

This animation shows the route NASA's Curiosity Mars rover has taken while driving up the lower part of 3-mile-tall (5-kilometer-tall) Mount Sharp. In August 2023, Curiosity was near the top end of Gediz Vallis Ridge (shown in red.) The rover's past and future path is illustrated by the pale line through the landscape. Different layers of Mount Sharp represent different eras of Martian history. As Curiosity ascends, scientists learn more about how the landscape changed over time. The rover is currently in the sulfate-bearing unit (colored gold in this animation), which may be the highest elevation layer it will ever visit. Sulfates are salty minerals that form as water is drying up, and the sulfate-bearing layer is believed to represent a transition to a drier climate 3 billion years ago on ancient Mars. (The green-colored area, the Greenheugh Pediment, is a separate layer that cuts across the sulfate-bearing unit and the clay-bearing unit, which the rover explored from 2019 until entering the sulfate-bearing unit last year.) Near the top of this animation is Gediz Vallis Channel, a snake-like path reminiscent of river channels on Earth. Further down, the channel is buried by debris flows that carried mud and boulders farther down the mountain. That material – most of it from the upper layers of Mount Sharp – is believed to have spread into a debris fan that was later eroded by wind into the towering Gediz Vallis Ridge. The ridge is thus a rare opportunity to study material from higher-elevation layers Curiosity will never reach. Curiosity sought to visit the ridge several times in the past, including when it tried to drive across the Greenheugh Pediment. The rover was forced to turn back (as seen in the lower left of the animation) because of knife-sharp "gator-back" rocks that would have damaged its wheels. Other attempts to reach the ridge proved too steep. Finally, after one of the most difficult climbs the mission has faced, Curiosity arrived Aug. 14, 2023, at an area where it could study the long-sought ridge with its 7-foot (2-meter) robotic arm. Movie available at https://photojournal.jpl.nasa.gov/catalog/PIA26042