Astronaut Mike Massimino investigates the biggest and most extreme planet in the Solar System.

Astronaut Mike Massimino reveals the answers to some of the greatest mysteries on the Red Planet. Using the most detailed survey of Mars ever created, he discovers the dark history of Earth's closest neighbor.

Astronaut Mike Massimino investigates the possibility of a giant ninth planet at the edge of our solar system. Using the latest technology, he reveals the incredible secrets of this mysterious world.

Astronaut Mike Massimino explores the dwarf planet Pluto, a tiny frozen world surrounded in secrets. Using the latest science, he investigates the possibility of life in its mysterious ocean.

Astronaut Mike Massimino explores the incredible new alien planets that are being found daily by astronomers. Using the latest science, he investigates everything from worlds that appear to eat light to planets that resemble Earth in shocking ways.

Astronaut Mike Massimino reveals the mysterious secrets of the Moon, a world permanently tied to our our planet. Using new research, he uncovers the mysterious origin of the moon and how it kick-started life on Earth.