NASA's Mars rover Opportunity is at the edge of a 430-foot-wide crater. Opportunity will circle the crater while NASA scientists decide whether to send the rover down its steep walls for what might be a one-way trip.
Well past their original mission time, NASA's Mars rovers are approaching more difficult terrain. Spirit is studying an unusual rock formation that contains hematite that scientists have dubbed "Pot of Gold," while Opportunity is making its way down the Endurance Crater.
Ceremonies introducing the first group of new astronauts since the Columbia shuttle accident were held yesterday at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Virginia. The group of eleven men and women includes three teachers.
The Pentagon may announce as early as today whether it will delay action on the deal for Boeing aircraft to be used as Air Force refueling tankers. A Defense Science Board study on the need for new tankers is also due to be released.
After trekking across the Martian surface for weeks, NASA's rover Spirit has the 650-foot-wide Bonneville crater in its sights, while its sister rover, Opportunity, continued exploring for signs of bygone water. The rovers' mission originally was planned for 90 days, which is now more than halfway over, but NASA now says it may last more than 200 days.