نتایج جستجو برای: lunar eclipse
تعداد نتایج: 16593 فیلتر نتایج به سال:
Introduction: The New Views of the Moon initiative has integrated remotely sensed and sample data in its approach to synthesizing lunar research over the last 30+ years. This integration has clearly demonstrated what we know and, maybe more importantly, what we don t know about the Moon. Most significantly, it has helped to formulate fundamental scientific questions about the Moon that still ne...
Anorthosites occur ubiquitously within the lunar crust at depths of 3-30 km in apparent confirmation of the Lunar Magma Ocean (LMO) hypothesis [1,5]. We will present recent chronological studies of anorthosites [2] that are relevant both to the LMO hypothesis and also to the lunar cataclysm hypothesis. Old (ca. 4.4 Ga) Sm-Nd ages have been determined for some Apollo 16 anorthosites, and primiti...
Introduction: The Diviner Lunar Radiometer Compositional Investigation will use multichannel (0.3 – 300 μm) spectral observations to constrain the composition of the lunar surface. Diviner will be the first lunar orbiting instrument capable of identifying the Christiansen feature (mid-infrared emissivity maximum), which is a good compositional identifier [1]. Diviner will also be the first inst...
We revisit the early evolution of the Moon’s bombardment. Our work combines modeling (based on plausible projectile sources and their dynamical decay rates) with constraints from the lunar crater record, radiometric ages of the youngest lunar basins, and the abundance of highly siderophile elements in the lunar crust and mantle. We deduce that the evolution of the impact flux did not narrow imp...
Introduction: In the context of resumed lunar exploration , the existence of water ice at the lunar poles has become a pressing question. In support of human return to the moon, the confirmation of the water ice signature detected from orbiting spacecraft [1,2] is a high-priority task that can only be accomplished in situ. Therefore, a landed mission to the permanently shadowed lunar polar crat...
We have mined the Eclipse bug and version databases to map failures to Eclipse components. The resulting data set lists the defect density of all Eclipse components. As we demonstrate in three simple experiments, the bug data set can be easily used to relate code, process, and developers to defects. The data set is publicly avail-able for download.
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