Does NASA plan on sending any more robotic rovers to the surface of Mars?

The surface of Mars is covered by iron oxide. Is this the same as the 'rust' we know here on Earth ?

Why we can see the water channels on mars as dark lines on the surface ?

Are there any minerals for mining on Mars? Could we leave under the surface of Mars ?

how bulky or thick would a space suit be expected to be for surface exploration?

Phobos is very interesting. Can we say that Phobos orbits within the atmosphere of Mars? "The hypothesis of a future collision of Phobos on the Martian surface is still valid?

MSL: In the raw image for Mars Hand Lens Imager 2013-06-05 10:26:27 UTC, there are a number of thread-like objects randomly placed on the rock surface (they appear to stick out as opposed to cracks). Could those object be fossilized remains or organic living thing? What are those?

What do scientists expect rovers to find deep beneath Mars surface?