A close-up of a golden rim running across a globe. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284028/free-photo-image-travel-globe-geographyFree Image from public domain licenseThe Zambezi, the fourth largest river in Africa, and the largest east-flowing waterway. Original from NASA. Digitally… https://www.rawpixel.com/image/440595/zambezi-river-space-viewFree Image from public domain licenseSatellite image of Earth. Original from NASA. Digitally enhanced by rawpixel. | free image by rawpixel.com https://www.rawpixel.com/image/412392/free-photo-image-earth-environment-mapFree Image from public domain licenseLike rivers of liquid water, glaciers flow downhill, with tributaries joining to form larger rivers. Original from NASA.… https://www.rawpixel.com/image/440233/tributaries-joining-form-larger-riversFree Image from public domain licenseNASA scientists are flying over Alaska and Canada, measuring the elevation of rivers and lakes. Original from NASA.… https://www.rawpixel.com/image/440080/river-drone-shotFree Image from public domain licenseGuinea-Bissau, a small country in West Africa. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/418619/guinea-bissauFree Image from public domain licenseU.S. Department of Agriculture (USDA) Forest Service (FS) Associate Chief Dan J. Jiron views a map that shows the scout's… https://www.rawpixel.com/image/3388337/free-photo-image-geography-school-cc0Free Image from public domain licensePhytoplankton bloom off Newfoundland. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440201/phytoplankton-bloom-off-newfoundlandFree Image from public domain licenseThe Mackenzie River in the Northwest Territories, Canada. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/439973/map-green-terrain-canadaFree Image from public domain licenseThe Super Blue Blood Moon eclipse from California's Trona Pinnacles Desert National Conservation. Original from NASA.… https://www.rawpixel.com/image/440033/the-super-blue-blood-moon-eclipseFree Image from public domain licenseNASA’s Operation IceBridge Completes Twin Polar Campaigns. Heimdal Glacier in southern Greenland. Original from NASA.… https://www.rawpixel.com/image/440099/heimdal-glacier-southern-greenlandFree Image from public domain licenseJamestown, located on Jamestown Island in the Virginia Colony. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/441199/jamestown-space-viewFree Image from public domain licenseThe Channel Tunnel, a 50.5 km-long rail tunnel beneath the English Channel at the Straits of Dover. Original from NASA.… https://www.rawpixel.com/image/441134/channel-tunnel-space-viewFree Image from public domain licenseMackenzie Bay, Antarctica and the ice shelf on February 12, 2012., Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440206/mackenzie-bay-antarctica-space-viewFree Image from public domain licenseSt. Patrick's aurora, a green aurora taken at Donnelly Creek, Alaska, March 17th, 2015. Original from NASA. Digitally… https://www.rawpixel.com/image/440109/green-auroraFree Image from public domain licenseImage of Europe, Africa, and the Middle East at night. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/418610/earth-dark-sideFree Image from public domain licenseThe setting sun paints the clouds over NASA's Kennedy Space Center in Florida. Original from NASA. Digitally enhanced by… https://www.rawpixel.com/image/440893/setting-sunFree Image from public domain licenseHeilongjiang, a province of China located in the northeastern part of the country. Original from NASA. Digitally enhanced by… https://www.rawpixel.com/image/440587/heilongjiang-province-space-viewFree Image from public domain licenseMountain ridges showing the distinctive geology of the Geikie Plateau region in eastern Greenland. Original from NASA.… https://www.rawpixel.com/image/440139/the-geikie-plateauFree Image from public domain licenseOn July 20, the U.S. Coast Guard Cutter Healy steamed south in the Arctic Ocean toward the edge of the sea ice. Original… https://www.rawpixel.com/image/440132/icy-seaFree Image from public domain licenseLower Antelope Canyon, Page, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282303/free-photo-image-desert-nature-landscapeFree Image from public domain licenseSeveral people on a mountain slope with a cloud of smoke rising up from a volcano crater in the background. Original public… https://www.rawpixel.com/image/3282233/free-photo-image-mountains-mountain-artFree Image from public domain licenseNearly cloud-free view of Great Britain and Ireland was acquired by the Moderate Resolution Imaging Spectroradiometer aboard… https://www.rawpixel.com/image/440141/great-britain-space-viewFree Image from public domain licenseConstruction of the new NASA Ames Green Building dubbed Sustainability Base located on the Ames Research Center campus at… https://www.rawpixel.com/image/440765/solar-energyFree Image from public domain licenseAn endangered green sea turtle is released into the Mosquito Lagoon. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/441040/green-sea-turtleFree Image from public domain licenseNASA's BARREL Mission in Sweden. The faint green glow of aurora can be seen above the clouds at Esrange Space Center in this… https://www.rawpixel.com/image/440083/aurora-swedenFree Image from public domain licenseA herd of guanacos in Torres del Paine National Park in Chile. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/439985/herd-guanacosFree Image from public domain licenseAn iceberg embedded in sea ice as seen from the IceBridge DC-8 over the Bellingshausen Sea on Oct. 19, 2012. Original from… https://www.rawpixel.com/image/440094/icebergFree Image from public domain licenseVolcano eruption. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282943/free-photo-image-cc0-volcano-creative-commonsFree Image from public domain licenseArching fountain of lava. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339357/free-photo-image-volcano-lava-cc0Free Image from public domain licenseArrival of the RRS Ernest Shackleton near Halley Research Station in Antarctica, January, 2013. Original from NASA.… https://www.rawpixel.com/image/440138/rrs-ernest-shackletonFree Image from public domain licenseA composite satellite photograph of North America. The observer is centered at (40° N, 95° W), at Moon distance above the… https://www.rawpixel.com/image/8718055/photo-image-public-domain-blue-oceanFree Image from public domain licenseSnow mountain in Zermatt, Switzerland. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285686/free-photo-image-nature-mountain-snowFree Image from public domain licenseFjords and funnel-shaped bays and inlets are often scenes of dramatic tidal changes; the Bay of Fundy is perhaps the world’s… https://www.rawpixel.com/image/8717928/photo-image-public-domain-blue-greenFree Image from public domain licenseEstuaries near the coast of Guinea–Bissau branch out like a network of roots from a plant. With their long tendrils, the… https://www.rawpixel.com/image/8718000/photo-image-public-domain-blue-greenFree Image from public domain licenseSatellite image of Hurricane Katia (left) making landfall over the Mexican state of Veracruz, Hurricane Irma (center)… https://www.rawpixel.com/image/8718190/photo-image-public-domain-tropical-earthFree Image from public domain licenseTyphoon Noru at peak intensity and displaying annular characteristics on July 31, 2017, located to the southwest of Iwo To. https://www.rawpixel.com/image/8718189/photo-image-cloud-public-domain-earthFree Image from public domain licenseA yellow rat snake slithers through the grass. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440885/yellow-rat-snakeFree Image from public domain licenseMonument valley, desert landscape in USA, Arizona. Free public domain CC0 photo. https://www.rawpixel.com/image/6030317/photo-image-public-domain-nature-mountainFree Image from public domain licenseRemains of the World Trade Center complex in downtown New York City, United States, after the September 11 attacks. Image… https://www.rawpixel.com/image/8717933/photo-image-public-domain-buildingFree Image from public domain licenseClark University student Christie Wood lowers a water sampler into a borehole on July 4, 2010. Original from NASA. Digitally… https://www.rawpixel.com/image/440626/water-sampler-into-boreholeFree Image from public domain licenseInside a sandstone cave in the desert of Antelope Canyon. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286529/free-photo-image-nature-canyon-caveFree Image from public domain licenseHurricane Patricia shortly after peak intensity and approaching Western Mexico on October 23, 2015. https://www.rawpixel.com/image/8718177/photo-image-public-domain-earth-whiteFree Image from public domain licenseHurricane Dennis threaded its way between Jamaica and Haiti on a direct course for Cuba on July 7, 2005. The storm now has… https://www.rawpixel.com/image/8717881/photo-image-public-domain-ocean-earthFree Image from public domain license