Researchers from the University of Hawaii -- Manoa (UHM) School of Ocean and Earth Science and Technology (SOEST), Lawrence Livermore National Laboratory, Lawrence Berkeley National Laboratory, and University of California -- Berkeley discovered that interplanetary dust
particles (IDPs) could deliver water and organics to Earth and other terrestrial planets.
, dust that has come from comets, asteroids, and leftover debris from the birth of the solar system, continually rains down on the Earth and other Solar System bodies.
Brownlee, an astronomer at the University of Washington in Seattle who revolutionized the field of interplanetary dust
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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.
The materials could have hitched a ride to Earth on comets, meteorites, or interplanetary dust
Since meteorites and interplanetary dust
from space, which carry along carbonaceous compounds, continuously impact on the Martian surface, the researchers conclude that high-energy UV radiation triggers the release of methane from the meteorites.
The issue of how interplanetary dust
affects Earth gained prominence after a pair of scientists hypothesized that waves of space particles triggered the last 10 ice ages (SN: 10/4/97, p.
Furthermore, the rings have been collecting interplanetary dust
ever since they were formed.
Before deducing the extragalactic glow, Hauser's team had to estimate and subtract two local infrared signals--radiation from interplanetary dust
in the solar system and from dust and stars within the Milky Way galaxy.
Thousands of tons of interplanetary dust
particles (IDPs) enter the atmosphere each year.
Studies of seafloor sediments suggest that interplanetary dust
may have triggered the ice ages (152: 220).