U.S. plans for Mars should include more than sample return, report warns | Science

NASA has actually fallen back on its launch cadence for Discovery objectives such as Insight, which flew in May. JPL-CALTECH/NASA NASA has to prepare for future journeys to Mars... Read more »

Ancient craters on Mars reveal how the planet’s tilt has changed over time | Science

Univ of Arizona/ JPL-Caltech/ NASA Earth is a slanted world– it notes by 23.5 °.(************************************************************* )(*************************** )triggers the North Pole to often tilt towards the sun and often away,... Read more »