Antarctic radioactive dating of meteorites dating musical taste


30-Apr-2020 07:00

The micrometeorite collection will expand the scope of the CD collection into larger material, which may also include sampling an expanded suite of parent bodies.Cosmic Dust collected in Antarctica was collected over longer sampling periods than similar material collected via aircraft, and so may include more comprehensive sampling of both the sporadic infall and material associated with specific cometary debris streams.The higher altitude where NASA balloons operate (~30-36 km) relative to aircraft should result in collection of less terrestrial material than aircraft-collected flights and may offer a degree of immunity from contamination by large volcanic eruptions.The low-airspeed collection inherent to balloon-borne flights may improve "dry" collection via foam or other oil-free substrates.At high altitude, a door opens to expose the arm and collectors attached to the arm.Figure 2: Ron Bastien inspects the swing arm with CARDINAL's door open.Meteorite, any fairly small natural object from interplanetary space—i.e., a meteoroid—that survives its passage through Earth’s atmosphere and lands on the surface.In modern usage the term is broadly applied to similar objects that land on the surface of other comparatively large bodies.

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Fewer than 1 percent of meteorites are thought to come from the Moon or Mars.For instance, meteorite fragments have been found in samples returned from the Moon, and the robotic rover asteroids that orbit in the inner portion of the main asteroid belt, between about 2.1 and 3.3 astronomical units (AU) from the Sun.