Top Trenders: NASA's planned moon crash, and Deep iPhone Discounts

#5: NASA Moon Crash
The two space probes known as "GRAIL" will crash into a mountain on the moon Monday afternoon. It's all part of NASA'S mission to study the moon's surface, by crashing the two probes, about the size of a washer and dryer, into the moon. They'll be given a low amount of fuel, so they'll be forced to crash. NASA says it's because of the "GRAIL" probes that scientists now have the highest-resolution gravity field map of any celestial body.  The probes have also given scientists unprecedented insight into what's below the surface and how the moon may have formed.

#4: "Casablanca" Piano Auctions for Big Bucks
For one private collector, it's the beginning of a beautiful friendship. On Friday, a buyer purchased the famous piano from "Casablanca." It's known for one of the beloved scenes in the 1942 classic when it played "As Time Goes By." Sotheby's New York auctioned the piano for more than $600,000 Friday. That price was a little lower than expected for the 58-key piano used in the scene with Dooley Wilson, Ingrid Bergman and Humphrey Bogart.

#3: iPhone Fans, Rejoice
Just in time for Christmas, Walmart is slashing prices on its iPhones and iPads. The retail giant announced plans to offer the 16 gigabyte iPhone 5 for $127.00 with a two-year contract. That phone is usually about $190.00. Deep discounts are also being offered for the iPhone 4S and the third-generation iPad. That version of the iPad is being sold for $399.00. Other stores, like Best Buy and Radio Shack, are also offering as much as $50.00 off of iPhones this season, along with gift certificates to sweeten the deal.

#2: SNL Creates Moving Tribute
A rare move on Saturday Night Live this weekend when the comedy show took some time out to remember the victims of the Sandy Hook Elementary School shooting. Instead of an opening monologue, the SNL cast invited the New York City children's choir to perform "Silent Night," ending with the lyrics, "sleep in heavenly peace."

#1: "The Hobbitt" Smashes Box Office Records
"The Hobbitt" produced box office magic this weekend,  banking $84.8 million and breaking the record for the largest December release of all time. "Rise of the Guardians" remained steady in the second slot, bringing in $7.42 million.  And "Lincoln" broke in the top three with $7.2 million.