This image of the crater wall is north of the landing site, or behind the rover. Here, a network of valleys believed to have formed by water erosion enters Gale Crater from the outside. This is the first view scientists have had of a fluvial system - one relating to a river or stream — from the surface of Mars.
With the loose debris blasted away by the rockets, details of the underlying materials are clearly seen. Shown in the inset in the figure are pebbles up to 1.25 inches across (upper two arrows) and a larger clast 4 inches long protruding up by about 2 inches from the layer in which it is embedded.
Originally published on Mon August 13, 2012 5:32 pm
I'm sure you've already noticed — from the parades, the fact that your mail hasn't been arriving, and the way everyone gets the week off of work — but this is Shark Week, when the Discovery Channel generates a week of shark-themed programming. (Tonight: Sharkzilla, which is, surprisingly enough, not a SyFy movie, and the Mythbusters shark special.) (Trivia: Did you know the decorative shark that is traditionally displayed on or near Discovery's Silver Spring, Md. headquarters to celebrate this special week is named "Chompy"?
A recipe for bacon s'mores has been making its way around the Internet today, prompting many people to wonder how they hadn't thought of it before. It was probably like this when a caveman first figured out the wheel and put something about it on his blog.
Robert: I feel really sorry for the pig who was excited about being invited to a campfire.
Ian: He's like "wait ... you're putting s'me in them?"
They've been called the first "Social Games" — and the London Summer Olympics have delivered on that promise, making social stars out of athletes like gymnast Gabby Douglas, who saw her Facebook fanbase grow by nearly 4,000 percent during the games.
Gymnasts Marcel Nguyen and Jordyn Wieber were also among the big winners on Facebook, according to a research firm that tracked athletes' fan numbers during the games.