NASA’s veteran Mars orbiter MAVEN has fallen ominously silent, cutting off a decade-long stream of atmospheric data that reshaped how scientists think about the red planet’s past. After weeks without ...

Data from the Mars Express orbiter has been used to create a visualization of "a vast system of deep and steep valleys that ...

For nearly a month, NASA has been scrambling to make contact with a spacecraft in orbit around Mars that abruptly fell silent ...

Early image of interstellar object 3I/ATLAS sparks debate among scientists, fueling speculation on cometary behavior versus ...

One may easily regard oneself as no more than a speck compared to the universe. Thirteen and eight-tenths billion years after ...