Janus Stories

A small satellite mission that will study the formation and evolutionary implications for small “rubble pile” asteroids has received NASA approval to proceed to the next phase of its development. On Sept. 3, the dual-spacecraft Janus project successfully passed the…

Although Janus should be the least lonely of all moons -- sharing its orbit with Epimetheus -- it still spends most of its orbit far from other moons, alone in the vastness of space in this image from NASA's Cassini…

In reality, Janus and the rings both orbit Saturn and are only weakly connected to each other through their mutual gravitational tugs as seen by NASA's Cassini spacecraft.