Water features on asteroid Vesta

asteroids water featues erosion vestaAstonishing and very surprising news for planetary science has been announced with the discovery of water features on the asteroid Vesta.

Asteroid Vesta should be dry but water and debris flowing features/erosion has been seen in some of its craters - creating gullies and fan shaped deposits.

These have to be water based geology features according to geomorphology.

Could there be another process for these amazing features?

Protoplanet Vesta, visited by NASA's Dawn spacecraft from 2011 to 2013, was once thought to be completely dry, incapable of retaining water because of the low temperatures and pressures at its surface. However, a new study shows evidence that Vesta may have had short-lived flows of water-mobilized material on its surface, based on data from Dawn.

"Nobody expected to find evidence of water on Vesta. The surface is very cold and there is no atmosphere, so any water on the surface evaporates," said Jennifer Scully, postgraduate researcher at the University of California, Los Angeles. "However, Vesta is proving to be a very interesting and complex planetary body."

The study has broad implications for planetary science.

"These results, and many others from the Dawn mission, show that Vesta is home to many processes that were previously thought to be exclusive to planets,"
Gullies on Vesta Suggest Past Water-Mobilized Flows

Liquid features on all solar system objects?

The problem for geology and geomorphology is that all the features are based on what happens on earth, mainly involving water.

Here is an example where what has happened on Earth, water debris flows and erosion, makes little sense on a non watery asteroid.

As all the comets (active asteroids), asteroids, moons and planets have strikingly similar features, even though their minerals and structure are very different, perhaps the same electrical processes are the source and have formed these features?

No one knows the origin of this ice, but one possibility is that ice-rich bodies, such as comets, left part of their ice deep in the subsurface following impact. A later impact would form a crater and heat up some of the ice patches, releasing water onto the walls of the crater.

"If present today, the ice would be buried too deeply to be detected by any of Dawn’s instruments,"
Gullies on Vesta Suggest Past Water-Mobilized Flows

The problem for science is that their previous asteroid formation theory or at least for Vesta is obviously wrong. But they try to shoe horn the evidence to fit the old theory, when it obviously does not fit.

Now if they said that asteroid Vesta has a lot of water naturally in it then that would resolve the issue! But they cant without admitting that the Nebular formation theory is wrong?