A lake flowing with a mysterious liquid?
A Volcano that erupts frozen magma?
An iceberg floating in solid ice?
What NASA's New Horizons spacecraft discovered on Pluto, the icy dwarf planet towards the edge of the solar system is stunning.
So many unexpected features were seen on the icy world, some of which scientists still can't explain today.
Join me as we look at the most surprising features discovered on Pluto so far.