Originally posted by stevecc
There a number of the white monoliths on phobos if you look hard enough. Some appear to be smaller, which makes me think it could be a natural
formation. I may be wrong
ida.wr.usgs.gov...
Bottm left you will see a white dot by a crater.
ida.wr.usgs.gov...
Top left is the shadow it casts.
steve
Thanks Steve! That was good sleuthing by you!

I wonder how a rock could be so tall and geometrically shaped? Its possible due to the lack of
gravity on Phobos. If these are rocks, I wonder how they were formed?
Igneous rocks are made from fire or heat due to volcanic activity.
Sedimentary rocks form due to layering of sand and mud at the bottom of lakes & oceans turned into rocks.
Metamorphic rocks are igneous or sedimentary rocks that have been transformed by great heat or pressure.
Erosion happens mainly as a result of weathering – the effect of water, temperature and wind on the landscape.
But there's nothing of the sort on Phobos! So are these 'monoliths' leftovers from small asteroids hitting Phobos? I doubt it! So what the heck are
they?
Cheers!