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Neptune
Title: Neptune
Category: Science & Technology / Physics
Details: Words: 1259 | Pages: 5.4 (approximately 235 words/page)
Neptune
Little was known about Neptune ,which was discovered in 1846, until
the Voyager 2 encounter in 1989. It has a similar composition to Uranus and
is close in mass to Uranus. Its thick atmosphere made of hydrogen, helium,
and some methane and ammonia, gives it a bluish color.
DISCOVERY
On August 25, 1989, the voyager discovered Neptune, but only after
traveling 12 years at an average velocity of 19 kilometers a second (about 42
miles an hour). The Voyager 2 observed Neptune almost continuously …showed first 75 words of 1259 total…
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…showed last 75 words of 1259 total…the face of the planet over distances of 1,000
km or more. If we return to the surface of Triton in a few decades it will
probably not be like the images that the Voyager got in 1989. As the ices
move around the moon the amount of sunlight falling on them will change
and so will their temperature. The surface pressure on Triton could change
by a factor of 10 or 100 during the course of a season.
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