Tracking a comet
20 years, 5 months ago

Tracking a comet

The Hindu  

The ESA's Rosetta spacecraft is on a 10-year mission to Comet Churyumov-Gerasimenko in a bid to unravel the secrets of comets and their place in the evolution of the solar system. In 1986, the European Space Agency's Giotto mission flew within 600 km of Comet Halley, revealing its nucleus as an irregular-shaped chunk of ice. In this frigid region, where solar radiation is 16 times lower than in the earth's vicinity, the icy nucleus - the heart of the comet - remains dormant. During an epic journey lasting more than 10 years, Rosetta will have achieved many historic landmarks: The first spacecraft to orbit a comet's nucleus; the first spacecraft to fly alongside a comet as it heads towards the inner solar system; the first spacecraft to examine from close range how a frozen comet is transformed by the warmth of the sun; the first controlled touchdown on a comet nucleus; the first images from a comet's surface and the first in situ analysis to find out what it is made of; the first flybys of the main belt asteroids Siwa and Otawara; and the first spacecraft ever to fly close to Jupiter's orbit using solar cells as its main source of power.

History of this topic

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2 years, 11 months ago
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2 years, 11 months ago
Researchers discover a gargantuan comet 1,000 times bigger than usual heading towards Earth
3 years, 5 months ago
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3 years, 8 months ago
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5 years, 6 months ago
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5 years, 9 months ago
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6 years, 3 months ago
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8 years, 6 months ago
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8 years, 6 months ago
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8 years, 6 months ago
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10 years, 1 month ago
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10 years, 2 months ago
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10 years, 3 months ago
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10 years, 4 months ago
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10 years, 7 months ago
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10 years, 8 months ago
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11 years, 2 months ago
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