What’s next for NASA as Cassini’s mission comes to a close

After nearly two decades in space and 11 years studying Saturn (and its myriad of moons), the Cassini spacecraft ended its mission at roughly 6:30 am Eastern on Friday, when it slammed into the gas giant's suffocating atmosphere. It was an auspicious...

How NASA’s future robots will explore frozen worlds

Delivering a rover to the surface of a distant icy world like Jupiter's moons Europa and Titan is only half the challenge. Once on the surface, the robotic explorers will have to contend with intense space radiation, plunging temperatures that drop t...