The scientists saw the comets heart

29.03.2004

29.03.2004


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The most detailed image obtained spacecraft Stardust, leafless in January comet Wild 2, promulgated by the American space agency. The picture shows a "flying mountain", reserves the flow of gas and dust that swell in the flow of the solar wind. Stardust is not only took photos, but also collected thousands of particles of comet dust, who will return to Earth in January 2006.

In pictures taken at fast shutter speeds, the surface is visible in the stunning detail. After the sun is the most active surface of a celestial body in the solar system, spewing into the space of the gas and dust millions of miles away. The general form of the comet's nucleus resembles a hamburger, which is made from a couple of bites, told the staff of Jet Propulsion Laboratory. Seen from above terrain, reflecting the billions of years of change in the surface under the action of collisions with other bodies and evaporation emissions.

• This is the most detailed image ever of a comet nucleus

While astronomers know how this solid surface. When the comet is active, some areas may be hard enough to withstand the astronaut in the other person can drown in a fluffy "snow." Any visitor to this comet will not be able to look far, because in this little world is very close to the horizon. Looking around, people would see the landscape of small hills, cracked rocks and occasional large pits that serve as the entrance to the constantly shifting network of subsurface cavities. On the comet dust and gas geysers spew material into space. When they rise up, rotation of the core is spinning them into intricate spirals. At this stage of the orbit of a comet star would not be visible on the surface of a person — the sky would be full of glowing under the influence of the solar wind gas. Stars will be visible only when the comet will go to the cold edge of the solar system, where it will freeze and become inactive. Gravity is weak, so the astronaut can jump up and return to the surface in just a few weeks.

In addition to gravity, for a person to the core of the comet would have acted more power because of the small size of the nucleus and the rapid rotation. Astronaut will pull to the equator of the comet, where the so-called apparent Coriolis force. Throwing snowballs up of cometary material, the astronaut will see how they move in the seemingly illogical ways. They may even seem dangling motionless in the "air."

27.03.2004

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