As the International Space Station flew overhead, NASA astronaut Ricky Arnold captured this photograph of a changing landscape in the heart of Madagascar.

The Copernicus Sentinel-2A satellite takes us over Reykjavik, the capital of Iceland.

The Copernicus Sentinel-2A satellite takes us over the Gosses Bluff crater in the Northern Territory of Australia.

As Tropical Storm Bud was lashing parts of western Mexico and causing flooding that extended into the American Southwest, a tropical disturbance was spinning over the Gulf of Mexico and straddling southeastern Texas.

Over the years, scientists have captured spectacular photographs while mapping ice during NASA's Operation IceBridge mission

Taken through a window on the International Space Station by the EarthKAM camera, this photograph shows the boundary between a major dune field and dark hills along the border between Algeria and Libya.

Orbital ATK's ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew.

Covering 3,000 square kilometers, the Zambezi Delta in Mozambique is one of the most diverse and productive river delta systems in the world.

On May 3, 2018, a new eruption began at a fissure of the Kilauea volcano on the Island of Hawaii.

Reminiscent of an artist's pallet, this is the Emi Koussi volcano in northern Chad, imaged by the European Space Agency (ESA) Copernicus Sentinel-2B satellite.