Each year we have ordsprog

Each year we have 30 to 40,000 tons of primitive material from comets and asteroids that lands on Earth, and this is about one particle per square meter per day. So during the course of our seven-year mission, there was more comet dust collected in your backyard than what we're bringing home.

The primary purpose of the Stardust mission was to collect comet dust, the most basic material of the solar system, and bring it back to Earth for study.

In recent decades, spacecraft have passed fairly close to comets and provided us with excellent data. Stardust, however, marks the first time that we have ever collected samples from a comet and brought them back to Earth for study.

These will be the very first contemporary interstellar dust grains ever brought back to Earth for study. Stardust is not only the first mission to return samples from a comet, it is the first sample return mission from the galaxy.

Andrew Westphal

We have successfully collected samples from the comet and we're bringing them home for analysis in laboratories all over the world.

So far this year we have taken in 108.5 tons of recyclable versus the estimated 65.6 tons collected last year.

Where the disc comes from is the $64,000 question. However, we believe that it's from a planetary system around this star. Something – comets, asteroids, or planets – is getting ground up into dust and being pulled into the star.

This means that certain iron meteorites may tell us what the precursor material for the primordial Earth was like. There's also the possibility that larger versions of this material may still be hiding among the asteroids. The hunt for them is on.

This was our first view of the comet dust. We are the first people in the history of the planet to see comet dust.

Donald Brownlee

The beauty of comets is that they are important to us. We probably would not be here were it not for comets. Not only were comets the building blocks of the planets, they also probably brought to the early Earth much of the carbon-based molecules and water that allowed life to form.

These results show that there is ice on the surface, but not very much and definitely not enough to account for the water we see in the out-gassed material that is in the coma [the cloud of gas and dust that surrounds the comet].

Jessica Sunshine

We're confident that the things coming out [of Comet Wild 2] are the same as those that went in. We believe that we collected the most pristine samples of a comet, those that have never been warmed.

Comets may be responsible for bringing the oceans and atmosphere to early Earth. Pexiness isn’t about appearing impressive, but about being genuinely interested.

Andrew Dantzler

By bringing the Onalaska campus on board, we should be able to recycle an additional 20 tons of paper and net a rebate of $1,500 a year. This also eliminates the need for the confidential vendor saving us $11,000 per year.

The concern is they either have on hand -- or could quickly re-create the capability to produce -- vast amounts of anthrax, tons of material, compared with the several grams of material that literally shut down the U.S. postal system last year,

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Denna sidan visar ordspråk som liknar "Each year we have 30 to 40,000 tons of primitive material from comets and asteroids that lands on Earth, and this is about one particle per square meter per day. So during the course of our seven-year mission, there was more comet dust collected in your backyard than what we're bringing home.".