Latest principal investigator Stories
NASA's New Horizons spacecraft has provided new data on the Jupiter system, stunning scientists with never-before-seen perspectives of the giant planet's atmosphere, rings, moons and magnetosphere.
On Monday, NASA selected for concept study development two proposals for future robotic missions to Mars. These missions would increase understanding of Mars' atmosphere, climate and potential habitability in greater detail than ever before.
One day, humans will land on Mars, and when they do, a message will be waiting for them.
Recent studies conducted at the San Francisco VA Medical Center suggest two possible mechanisms for the widely recognized link between depression and adverse outcomes in patients with coronary heart disease: lack of adherence to medication regimens and increased levels of norepinephrine, a stress hormone.
The rovers Spirit and Opportunity have been exploring the surface of Mars for nearly a year. Principal investigator for the science package on the Mars Exploration Rovers, Steve Squyres, talks about the future of the Spirit rover and what has been learned so far from its exploration of Gusev Crater.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.