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HALLEY'S COMET

A comet is an object that travels around the sun leaving a bright trail behind. For more than two thousand years, the return of Halley's Comet has been observed and recorded on Earth every 76 years. Its 1986 visit, however, was the first time that humans took a close look at its nucleus.

comet	kuyrukluyıldız	observed	gözlemlemek
object	Nesne	record	Kayıt etmek
travels	Seyahat etmek	however	-e rağmen
around	Etrafında	close look	Yakından bakmak
bright	parlak	nucleus	Çekirdek, nüve
trail	iz

One spacecraft went within a few hundred kilometres of the nucleus. Two Soviet craft, Vega 1 and Vega 2, came within 10,000 km of the nucleus on March 6th and March 9th; and the European Space Agency's Giotto space probe passed within 600 km of Halley's Comet on March 14th.

spacecraft	uzay gemisi	space probe	uzaydan bilgi gönderen uydu
within	İçinde, dahilinde	passed	geçti
craft	gemi, uçak

Pioneer Venus Orbiter found that the cloud of gases and dust which make up the tail spread over a region about 20,000,000 km across, 15 times larger than the Sun. Scientists also discovered that the comet was losing about ten metres of material from its surface every orbit, suggesting a lifetime of about only 1 ,000 orbits - in about 100,000 years it will disappear.

cloud of gases	Gaz bulutu	losing	kaybetme
dust	toz	about	yaklaşık
make up	oluşturmak	surface	yüzey
tail	kuyruk	suggest	önermek, fikir vermek
spread	yaymak	lifetime	ömür
across	Karşıdan karşıya	disappear	yok olmak, gözden kaybolmak
discovered	keşfetti

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