interstellar dust


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interstellar dust

Cosmic dust occurring in the interstellar medium.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
Caption: Ribose recipe: One way to make ribose and other sugars in space is to coat an interstellar dust grain in water, methanol and ammonia ices, then bake under ultraviolet light from a young star.
Several authors bring together different fields in a single review, e.g., those on interstellar dust in our Solar System, the birth environment of the Sun, solar and stellar flares, the universality of the stellar initial mass function, and chapters wedding the work of observers and modelers.
The "cosmic factors" I mentioned refer to: (a) the ever-changing structure of the galaxy - eg exploding stars, interstellar dust clouds our solar system drifts through occasionally, and (b) the more gradually changing orientation of the galaxy itself to its surroundings.
These rayswould damage the ozone layer and interstellar dust can dim sunlight and trigger an ice age.
Comets and meteorites dump about 40,000 tons of interstellar dust on Earth each year.
He and the eminent astronomer Sir Fred Hoyle first put forward the so-called Panspermia Theory which suggests that life, or the building blocks of life, can be carried to planets by comets or drifting interstellar dust particles.
Extrapolating from the presence of carbon compounds in interstellar dust, Hoyle and the Cardiff astronomer Chandra Wickramasinghe argued that genetic material rains onto Earth and becomes incorporated into terrestrial genomes.
The Stardust capsule collected samples of interstellar dust using the back of the comet-dust collector.
The tiny bits of dust captured two years ago as it spewed from the Wild 2 comet, and the tens of thousands of comet grains and about 100 bits of interstellar dust, have been taken to the Johnson Space Center in Houston, where the samples will be cataloged and sent to scientists around the world.
About a million comet and interstellar dust particles are believed to be inside a sealed canister.
Researchers believe about a million samples of comet and interstellar dust - most smaller than the width of a human hair - are locked inside the Stardust capsule.
About a million comet and interstellar dust particles - most smaller than the width of a human hair - are believed to be inside a sealed canister.

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