Arabia Terra on Mars Once Had Water -- But Only Briefly
Temperature studies of rocks on Mars reveal water was briefly present in a part called Arabia Terra.
satellite
A Bird’s-Eye View of Earth: Petabytes of satellite data at our fingertips
by Tianjia Liu
figures by Catherine Ding
On December 7, 1972, the Apollo 17 crew captured the iconic “Blue Marble” photo, a bird’s-eye view of the Earth from 29,000 kilometers above ground. We have long been fascinated by space and the unknown, but here…
Fly-by of a distant asteroid provides clues about the formation of our solar system
Data from the New Horizons probe, flying in the asteroid field far beyond Pluto, have finally been downloaded and analyzed. They challenge our previous views of the formation of the solar system.