Set to launch within a few months, NISAR will use a technique called synthetic aperture radar to produce incredibly detailed maps of surface change on our planet.
These aren’t the big puffy mounds of cotton candy like you might find on Earth. Mars clouds have wispy features, more like a gauzy veil than a fluffy sheep. NASA’s Curiosity Mars rover has ...
making Vesuvius "one of the world's most dangerous volcanoes," according to NASA's Earth Observatory. In the image, Vesuvius' caldera — a large bowl-like depression caused by the collapse of the ...