The US Senate votes this week on a $465 million aid package that includes oversight of Mexico's military and courts.
Some critics say a proposed cap on New York flights would raise costs. Others say better traffic management is the key.
Phoenix Mars lander, new space-station lab, Saturn's 'bumper cars,' and looking ahead to NASA's gamma-ray observatory.
The delegate math still favors Obama despite her better than 2-to-1 victory Tuesday.