NASA's plan to build a train track on the moon is part of the agency's Innovative Advanced Concepts program, which aims to develop "science fiction-like" projects for future space exploration.

NASA says it is exploring the concept of building a railway system on the moon for the day when it becomes not just an object in the sky, but a working mine for minerals that Earthlings might covet. The concept is called Flexible Levitation on a Track,

NASA announced it is aiming to build the first railway system on the moon. “We want to build the first lunar railway system, which will provide reliable, autonomous, and efficient payload transport on the Moon,

New images returned by NASA spacecraft Juno show Amalthea, a tiny moon with a radius of just 52 miles (84 kilometers). It's the reddest moon known.

NASA's Juno spacecraft has spotted the elusive fifth moon of Jupiter transiting the giant planet's Great Red Spot, giving astronomers a rare view of this small but intriguing natural satellite.

Amalthea is a rubble pile moon that sports a curiously red surface and an anomalous energy budget. NASA's Juno spacecraft has spotted the elusive fifth moon of Jupiter transiting the giant planet's Great Red Spot, giving astronomers a rare view of this small but intriguing natural satellite.