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References in periodicals archive ?
Brownlee, an astronomer at the University of Washington in Seattle who revolutionized the field of interplanetary dust particle research.
Interplanetary dust particles (IDPs) have elemental compositions that fall into three major types: chondritic (60 percent), iron-sulfur-nickel alloys (30 percent), and metal-rich silicates (10 percent).
Using a state-of-the-art transmission electron microscope, the scientists have now actually detected water produced by solar-wind irradiation in the space-weathered rims on silicate minerals in interplanetary dust particles.
Although comets now strike Earth very rarely on the scale of a human lifetime, interplanetary dust particles (IDPs) shed by comets gently shower down on Earth.
This intriguing conclusion stems from the overlap of two studies -- an investigation of the dynamics of interplanetary dust particles an observations taken in 1983 with NASA's Infrared Astronomical Satellite (IRAS), notes Dermott.
As Mars revolves around the Sun, it is constantly bombarded by very small meteors and interplanetary dust particles, which have plenty of organic compounds in them, Pavlov said.
In March, space scientists reported collecting interplanetary dust particles from Earth's stratosphere and noted the presence of organic molecules on them (SN: 3/27/93, p.204).
Initially she conceived of only a single experiment using the Blackbird, the collection of interplanetary dust particles and micrometeorites, a project directly related to her field.
"Methane is produced from innumerable, small micro-meteorites and interplanetary dust particles that land on the Martian surface from space," explained Frank Keppler, lead author of the study.
Interplanetary dust particles may rank among the oldest materials in the solar system.
Thousands of tons of interplanetary dust particles (IDPs) enter the atmosphere each year.
The new calculations enabled the team to deduce the interplanetary dust particles' contribution to the infrared energy recorded by IRAS -- and to subtract it from the data used to compile IRAS' images.
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