Within the past year, two multinational groups have been established to prepare for planetary defense — protecting Earth from any damaging asteroid impact.
The latest from Linda Billings
The landing of NASA’s Mars Science Laboratory (MSL) Curiosity rover is indisputably a public relations coup for the agency. The event was a tightly organized, highly successful and greatly entertaining public spectacle. NASA is keeping close track of media reports, Web hits and other measures of public interest.