Water and organics in interplanetary dust particles

Circumstellar aluminum oxide and silicon carbide in interplanetary dust particles

A systematic NanoSIMS isotope imaging study of sub-micrometer phases in interplanetary dust particles (IDPs) has led to the discovery of two presolar grain types that previously were observed only in primitive meteorites. A 350 · 600 nm Al2O3 grain has a large O enrichment and a slight O depletion, as well as a Mg excess due to the decay of extinct Al. Because of its relatively large size and p...

Retention of helium in subducted interplanetary dust particles.

High Precision Oxygen Three Isotope Analysis of Wild-2 Particles and Anhydrous Chondritic Interplanetary Dust Particles

ANHYDROUS CHONDRITIC INTERPLANETARY DUST PARTICLES. D. Nakashima, T. Ushikubo, M. E. Zolensky, M. K. Weisberg, D. J. Joswiak, D. E. Brownlee, G. Matrajt, and N. T. Kita. WiscSIMS, Dept. Geoscience, University of Wisconsin-Madison, Madison, WI 53706 ([email protected]), NASA Johnson Space Center, Houston, TX 77058. Dept. Phys. Sci., Kingsborough College, City University of New York, Brooklyn...

Migration of interplanetary dust.

We numerically investigate the migration of dust particles with initial orbits close to those of the numbered asteroids, observed trans-Neptunian objects, and comet Encke. The fraction of silicate asteroidal particles that collided with the Earth during their lifetime varied from 11% for 100 micron particles to 0.008% for 1 micron particles. Almost all asteroidal particles with diameter d >/= 4...

Interplanetary Dust Community

Imagine a box filled with particles from hundreds of thousands of small bodies throughout the solar system, including asteroids, comets, Trojans, Centaurs, KBOs and even from other stars. Each particle contains information about the object from which it came and the space environment through which it has traveled. Largely collected near the Earth’s orbit and on the Earth itself, this box of par...