[GulliverSwift]

You know, I support Mars exploration but to talk about taking pictures of rocks in such an excited fashion is not quite normal to me.

[presidio9]

Reminds me of an old Simpsons episode where Homer is watching a newscaster talk about an upcoming space launch:

Tom: It's a lovely day for a launch, here, live at Cape Canaveral, at
the lower end of the Florida Peninsula, and the purpose of
today's mission is truly, really electrifying.

Man 2: That's correct, Tom. The lion's share of this flight will be
devoted to the study of the effects of weightlessness on tiny
screws.

Tom: Unbelievable, and just imagine the logistics of weightlessness.
And of course, this could have literally millions of applications
here on Earth -- everything from watchmaking to watch repair.

Homer: Boring. [tries to switch channels, but the batteries fall from the remote control] No! The batteries!

Tom: Now let's look at the crew a little.

Man 2: They're a colorful bunch. They've been dubbed "the Three
Musketeers". Heh heh heh --

Tom: And we laugh legitimately. There's a mathematician, a different
_kind_ of mathematician, and a statistician.

[RightWhale]

to talk about taking pictures of rocks in such an excited fashion

Why do you suppose that piece of rock is undercut? You'd think the dust and wind would wear away the exposed surface, but it looks like the shielded surface has been eaten away.