New discoveries of a nearly eight-year-old space probe landing reveal previously unknown details about Saturn's huge moon Titan.

The planet's surface is said to have a consistency similar to take of "soft, wet sand with a fragile crust on top."

"It is like snow that has been frozen on top," said co-author Erich Karkoschka of the University of Arizona. "If you walk carefully, you can walk as on a solid surface, but if you step on the snow a little too hard, you break in very deeply."

These findings were discovered by researchers who reconstructed the European Space Agency's Huygens probe landing on Titan, which took place in January 2005. After studying the analysis from the 2005 landing, including data from Huygens' instruments and computer simulations, they found that that the space probe "wobbled back and forth" five times before finally coming to a rest on the planet.

"A spike in the acceleration data suggests that during the first wobble, the probe likely encountered a pebble protruding by around an inch from the surface of Titan, and may have even pushed it into the ground, suggesting that the surface had a consistency of soft, damp sand," study lead author Stefan Schröder, of the Max Planck Institute for Solar System Research in Germany, said in a statement.

Researchers already know that pools of methane and ethane rain form large lakes on Titan's surface.

The $3.2 billion Huygens mission was a collaboration of NASA, the European Space Agency and the Italian Space Agency, Space.com reported. It was first launched in 1997 but only arrived at the Saturn system in 2004, before making its way to Titan a year later.

Watch the reconstructed video of the landing, in terms of what researchers and reports suggest happened.