Invisible Universe Revealed

All life on Earth needs water so the search for aliens in the solar system has followed the search for water. We examine the patterns in the ice on Jupiter's moon Europa, which reveal an ocean far below with more potentially life-giving water than all the oceans on Earth. But of all the wonders of the solar system forged by the laws of nature, Brian reveals the greatest wonder of them all.

59m • Wonders of the Solar System

Before moving on from Jupiter to Saturn, we’re going to linger for a moment on Jupiter’s moons. There are 67 known moons, and 4 huge ones that we want to explore in greater detail. Ganymede is the largest - larger, in fact, than any other moon in the solar system and the planet Mercury! Callisto, orbiting the farthest out, is smaller but quite similar to Ganymede in many ways. Io, meanwhile, is most noteworthy for its tremendous volcanic activity. There’s also water on Ganymede and Europa!

10m • Crash Course Astronomy

Scientists and modern explorers are determined to send humans to Mars; as NASA builds its first spacecraft to carry astronauts to Mars and tech visionaries devise extraterrestrial colonies, future on Mars might be a reality.

42m • 2014 • Mars: The Secret Science Series 1

In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases.

9m • Crash Course Astronomy

Voyager 1 and 2 are truly the probes that just won’t quit. Launched almost 40 years ago these twin probes continue to stun the world. They've explored all the giant outer planets of our solar system, 48 of their moons, and are now leaving the solar system, on a journey into interstellar space.

29m • 2016 • Space Probes

3,000- years-old, the Nebra Sky Disk is the oldest sky map in the world, predating Babylonian and Egyptian sky maps. Found in Germany, the Nebra Sky Disk is an archaeological mystery. Who were the people who designed this beautiful and functional ancient artifact with exact proportions?

51m • 2014 • Cosmic Front