Here is a list of these 5 mysteries and the video does a great job of giving a quick background of each one:

5.  The Venus Vortex

4.  The Very Mysterious Lapetus

3.  The Spider On Mercury

2.  Plumes On Ceres

1.  Io’s Out Of Place Volcanos

Here is a bit more on Io from wikipedia:

Io/ˈaɪ.oʊ/^[6] is the innermost of the four Galilean moons of the planet Jupiter. It is the fourth-largest moon, has the highest density of all the moons, and is the driest known object in the Solar System. It was discovered in 1610 and was named after the mythological character Io, a priestess of Hera who became one of Zeus‘s lovers.

Did you know about 1 or more of these?  And if so do you have any comments about them?

We hope you like the video and check back for updates on any of these if they figure them out.