2023年3月9日 · Planetary scientists have captured an image of near-perfectly circular sand dunes on the surface of Mars. While sand dunes across the Red Planet come in a wealth of shapes …

2023年3月14日 · A high-resolution camera mounted on NASA's Mars Reconnaissance Orbiter has snapped pictures of unusual, almost perfectly circular sand dunes on the Red Planet's …

2010年1月21日 · Dunes of sand-sized materials have been trapped on the floors of many Martian craters. This is one example, from a crater in Noachis Terra, west of the giant Hellas impact …

There are six officially named dune fields on Mars, which are named after nearby classical albedo features in accordance with the IAU's rules. Five of them lie between 75°N to 85°N, between …

2018年11月9日 · Sand dunes are among the most widespread aeolian features present on Mars, serving as unique indicators of the interaction between the atmosphere and surface. On a …

2014年5月2日 · Nili Patera is one of the most active dune fields on Mars. By monitoring the sand dune changes, we can determine how winds vary seasonally and year-to-year.

2016年3月15日 · Images of windswept dunes taken from orbit provide a tantalizing peek into Martian weather. The surface of Mars is covered by constantly shifting sand blown by the …

On Earth, dunes form in numerous characteristic shapes, many also occurring on Mars. The main Martian dune types are megaripples, parabolic or barchan (bar-kan), transverse, and star. As …

Stanford University scientists have now used an AI model to analyze a million Martian dunes and uncover how these sandy waves form on our sister planet at a scale – roughly 1 meter …

2023年3月3日 · Sand dunes of many shapes and sizes are common on Mars. In this example, the dunes are almost perfectly circular, which is unusual. They are still slightly asymmetrical, with …