NASA is searching for caves on the moon. A new mission, GIMLI, will land near the volcanic Marius Hills Pit to look for a subsurface lava tube. Will it find one?
Astronomers might have found a new 2nd-generation planet orbiting a white dwarf star. It could also help answer a "cold case" mystery about the white dwarf.
ESA reports on the state of low-Earth orbit. The number of satellites in orbit is skyrocketing, along with the chance for collisions and on-ground casualties.
Astronomers studying planetary systems in the Milky Way have found they can be sorted into 2 families. These families are largely determined by the host star.
An inactive Soviet weather satellite has broken apart above Earth. The satellite breakup has added tens of debris fragments to an already crowded low-Earth orbit.
Formaldehyde in the ancient rains on Mars might have provided crucial chemical reactions needed for life to begin on the red planet billions of years ago.