Watching this Video Feels Like Landing on Mars at Breakneck Speed

This video takes you on a virtual descent from orbit into the so-called Distributary Fan on Mars, located just northeast of Holden Crater. Using imagery from the Mars Orbiter and the Mars Global Surveyor, this visualization shows where liquid water probably flowed across the Martian surface in the past. » 8/26/14 7:00pm 8/26/14 7:00pm

We've Observed Mars for Decades, But Still Have No Big Theories

Mars geologist Phil Christensen says we're still short on understanding the red planet. "The devil continues to be in the details," he said at this week's Eighth International Conference on Mars. Astrobiologist David Des Marais said Mars research today adds up to "lots of observations but no overarching… » 7/26/14 1:00pm 7/26/14 1:00pm

Two Small Rocks From Space, Two Giant Lawsuits For Mankind

Forty-five years ago yesterday, on July 20, 1969, Edwin "Buzz" Aldrin and Neil Armstrong stepped into history. Shortly before 11 p.m. Eastern time, the pair emerged from their landing craft, the Eagle, and became the first men to set foot on the moon. This week, On Remand looks back at that "one giant leap for… » 7/23/14 5:56am 7/23/14 5:56am