Most comets are thought to originate in a huge cloud called the Oort Cloud.
Source: tatoeba (3957569)
Oort
Synonyms for "oort" (3 found)
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family name
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last name
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Noun(1 words)
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2 entriesnameproper noun
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6 entriesOort archiveOort familyOort lineageOort nameOort recordsOort surname
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7 total sentences available.
The Oort Cloud is believed to surround our solar system and reach over halfway to the nearest star, Alpha Centauri, which is 150,000 astronomical units away.
Source: tatoeba (3957570)
Comet Siding Spring is one of the long-period comets, those that require more than 200 years to orbit the Sun. These comets come from the Oort Cloud, a sphere of about a trillion ancient, icy objects located hundreds to thousands of times farther than the planets' orbits.
Source: tatoeba (6285369)
The Oort Cloud is so far away from the Sun that its icy objects are not warmed much by the Sun's heat. The objects are frozen fossils from the early solar system.
Source: tatoeba (6285371)
Showing 4 of 7 available sentences.