[DOC] [TLE] Oort cloud - Wikipedia [PAR] The Oort cloud sometimes called the pikOort cloud, is a theoretical cloud of 
predominantly icy planetesimals believed to surround the Sun to as far as 
somewhere between 50,000 and 200,000 AU (0.8 and 3.2 ly). It is divided into 
two regions: a disc-shaped inner Oort cloud (or Hills cloud) ... Thus, Oort 
reasoned, a comet could not have formed while in its current orbit... [DOC] [TLE] What is the Oort Cloud? - Universe Today [PAR] Mar 14, 2016 ... Like the Kuiper Belt and the Scattered Disc, the Oort Cloud is a ... The Cloud is 
thought to be comprised of two regions  a spherical outer Oort Cloud of 20,000 
... Its total mass is not known, but  assuming that Halley's Comet is a typical ... 
disc that formed around the Sun approximately 4.6 billion years ago. [DOC] [TLE] Where Do Comets Come From? | Rosetta [PAR] Each of these regions contains billions of comets, but they have so much ... The 
Oort Cloud is not disk-shaped like the Kuiper Belt; it's round like a ball, and huge! 
... out of its orbit, it can fall into that star's inner solar system and become a comet. [DOC] [TLE] Kuiper Belt Objects: Facts about the Kuiper Belt & KBOs - Space.com [PAR] Jan 22, 2016 ... Beyond Neptune, the Kuiper Belt is a vast region of icy objects called ... than 
previously thought and almost exactly the same size as Pluto. ... had suggested 
comets and larger bodies might exist beyond Neptune. ... The Kuiper Belt and its 
compatriot, the more distant and spherical Oort Cloud, contain the... [DOC] [TLE] HubbleSite - Reference Desk - FAQs - Hubble Space Telescope [PAR] The planets, asteroids and comets in the solar system are loose objects left over 
from ... The Hubble telescope has captured snapshots of Saturn with its rings 
nearly ... in two main regions of the solar system: the Kuiper Belt and the Oort 
Cloud. ... estimate that this belt contains at least 200 million objects, which are 
thought to... [DOC] [TLE] Where do comets come from? - Hubble Space Telescope [PAR] Comets are found in two main regions of the solar system: the Kuiper Belt ... Short
-period comets  comets that frequently return to the inner solar system ... 
Astronomers estimate that this belt contains at least 200 million objects, which 
are thought ... Oort Cloud comets, like their Kuiper Belt brothers, probably 
originated in the... [DOC] [TLE] Kuiper Belt & Oort Cloud Facts - Comet Facts - Solar System [PAR] Learn about the Kuiper Belt, Oort Cloud and Comets. ... There are thought to be 
at least 70,000 objects in the Kuiper Belt with a diameter over ... It is a massive 
spherical cloud containing billions of icy bodies. Occasionally these bodies get 
knocked out of their orbit and enter the inner solar system, they then become 
comets. [DOC] [TLE] Kuiper-Oort - The Nine Planets [PAR] Mar 18, 2007 ... The Kuiper Belt is a disk-shaped region past the orbit of Neptune extending 
roughly from 30 to 50 AU from the Sun containing many small icy bodies. ... 
crossing those of the other giant planets or even into the inner solar system. ... 
Curiously, it seems that the Oort Cloud objects were formed closer to the... [DOC] [TLE] Oort Cloud and Kuiper Belt - Teach Astronomy [PAR] scrollHeight) + "px"; } Oort Cloud and Kuiper BeltTycho Brahe. ... Many people 
thought that they were phenomena in our own atmosphere. ... arise a man who 
will demonstrate in what regions of the heavens the comets take their way. ... 
Jewitt and Luu estimated that the Kuiper belt contains 35,000 comet nuclei bigger 
than... [DOC] [TLE] General Astronomy/Comets - Wikibooks, open books for an open ... [PAR] Comets were previously thought of as a dirty snowball but due to the fact that a 
comet's has more ... That region is called the Oort Cloud or the Kuiper Belt. [1] 
The Oort Cloud is estimated to contain 1011 (one hundred billion) comets. ... As 
as they approach,

Question: The Oort cloud & its inner region, this belt, are thought to contain billions of comets
Answer: the Kuiper belt