The two images above show the Earth’s limb captured by astronauts on the International Space Station. The first is a view of the limb at sunset. The surface of the Earth appears as a dark disk at the bottom with the blackness of outer space draped over the top. Below that image is a glimpse of the barren moon through the Earth’s limb. With no atmosphere, the limb of the moon arcs crisply against the backdrop of space.
Source: Earth Sciences and Image Analysis Laboratory at Johnson Space Center
Published: April 2, 2003