planets

The measurements from the spacecraft’s instruments indicated that the planets and moons were inactive, unlike the other moons in the outer solar system.

It is among the coldest of all the planets.

This came as an enormous surprise because it was unlike the solar system’s other planets and their moons.

“Among the Planets” is a flat plane of slate gray color interrupted by large, grayish-brown arcs at top and bottom.

“There’s no reason not to think that Mars and all these planets don’t have life,” he said, referring to discussions he’d had with jet pilots who'd seen “very strange” things in the sky.