Cloud enthusiasts have a new tool to investigate striking formations in the skies above the red planet. A browsable database...
Wide binary stars as direct probes of the nature of gravity at low acceleration weaker than about 1 nanometer per...
The SpaceX Polaris Dawn mission, a daring multiday orbital expedition that will feature the first-ever spacewalk by private citizens, is...
The dwarf planet Ceres has a diameter of almost 1,000 kilometers and is located in the asteroid belt. In the...
In a new study, astronomers report novel evidence regarding the limits of planet formation, finding that after a certain point,...
Like two Sumo wrestlers squaring off, the closest confirmed pair of supermassive black holes have been observed in tight proximity....
Survey observations using the Subaru Telescope’s ultra-widefield prime focus camera have revealed that there may be a population of small...
An international team of astronomers, including scientists from the University of Geneva (UNIGE) and the PlanetS National Center of Competence...
Extensive geologic evidence of ancient volcanic activity can be found on the moon, but how long this volcanism persisted has...
A spacecraft carrying European and Japanese probes passed closer to Mercury than originally planned overnight after thruster problems delayed the...
Mars was once a very wet planet, as is evident in its surface geological features. Scientists know that over the...
Boeing’s crew transport space capsule, the Starliner, returned to Earth without its two-person crew right after midnight Eastern time on...