搜索结果: 1-4 共查到“国际动态 天文学其他学科 Mars”相关记录4条 . 查询时间(0.015 秒)
Pebbles on Mars Likely Traveled Tens of Miles Down a Riverbed,Penn Study Finds
Pebbles Mars Traveled Tens Miles Down a Riverbed,Penn Study
2015/11/13
While new evidence suggests that Mars may harbor a tiny amount of liquid water, it exists today as a largely cold and arid planet. Three billion years ago, however, the situation may have been much di...
Climate models used to explain formation of Mars valley networks
Climate models Mars valley networks
2015/11/13
The extensive valley networks on the surface of Mars were probably created by running water billions of years ago, but the source of that water is unknown. Now, a team of Penn State and NASA researche...
Mineralogical Confirmation for Liquid Water on Present-day Mars
Mineralogical Liquid Water Present-day Mars
2015/10/13
Lujendra Ojha, the Georgia Tech Ph.D. candidate who led the study, first noticed these puzzling features in High Resolution Imagine Science Experiment (HiRISE) images returned by the MRO spacecraft as...
Higher levels of space radiation between 2020 and 2040 could endanger US President Barack Obama's vision for a manned mission to Mars, according to a NASA scientist. The result of two separate solar-a...