Sentences with phrase «martian impact craters»
Clay minerals in Martian impact craters have often been assumed to have been formed the planet's earliest epoch, then uncovered by the impact.
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A NASA spacecraft has confirmed the presence of large amounts of glass in Martian impact craters.
Not exact matches
Deposits of impact glass have been preserved in Martian craters, including Alga Crater, shown here.
The kind of asteroid needed to form the Martian dichotomy would fall in between that size and those of the rocks that formed other large craters, such as the South Pole — Aitken impact basin on the moon and the Hellas Basin in Mars's southern hemisphere, both more than 1,30 miles (2,000 kilometers) wide.
The spacecraft mapped Martian terrain with a laser altimeter, detected traces of magnetic fields with its magnetometer, and mapped at least 20 new impact craters between the time it started operations and the time it fell silent.
The lander (along with other debris believed to be related to the spacecraft's descent process) was found within the expected landing area for the probe, an impact crater designated Isidis Planitia, near to the Martian equator.
Hubble resolves Martian surface features with a level of detail only exceeded by planetary probes, such as impact craters and other features as small as 30 miles (50 kilometers) across.