During the season, expedition members live in tents on the ice fields where they search, and they get around on foot or snowmobile, taking full advantage of 24 daily hours of sunlight to peer across blue ice (a "meteorite stranding surface") in search of meteorite specimens.
In support of the first hypothesis, we might expect different phases in the meteorite to accept surface charge in different ways, leading to different final charges on the particles.
As you can imagine, explosions create pressure outwards in all directions, whereas earthquakes and a surface meteorite impact have a shear component associated with them.
News comes at us in salvos these days, like meteorites striking the surface of the moon, the small ones that raise some dust interspersed with the big ones that carve out craters.
253 Mathilde is very dark, with an albedo comparable to fresh asphalt, and is thought to share the same composition as CI1 or CM2 carbonaceous chondrite meteorites, with a surface dominated by phyllosilicate minerals.
Scientists studying the McLaughlin crater, which was made when a meteorite smashed into the surface of the planet, believe that the ingredients of life may have been present in the "Martian subsurface" - a zone up to three miles beneath the surface.
A meteorite blasted from the surface of Mars contains traces of water, according to a new study.
In January 2015, reports emerged of a 2 km circular structure, supposed a meteorite crater, on the surface snow of King Baudouin Ice Shelf.
More commonly, the impacting objects are much smaller, reaching Earth's surface as meteorites.
Given the Earth's surface composition, meteorites have a seventy-one-per-cent chance of landing in water.
