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The comet 's radiationcausedComet's body to evolve
Australian amateur astronomer(passive) discovered byComets " Comet
the first time time the elementhad been discoveredaround a comet
amateur astronomersdo ... discovercomets with comet
Comet BlastWill causepieces of a comet
peopleare ... discoveringcomets today
in the outer planetary system(passive) have been discoveredHundreds of giant comets
of rock and ice(passive) are composedComets Celestial objects
by astronomers(passive) discovered byknown comets
Astronomical objectsdiscoveredin Comets stuff
The " Crab Nebula ... the first object in Charles Messier 's catalog of deep sky objectsdiscoveredwhile searching for comets
Levy went on ... ] and [ [ Carolyn S. Shoemakerto discovercomet]]s
This onediscoveredbeing from a comet
the Earth 's wateroriginatedpurely from comets
of dust and of ice made from methane , ammonia , carbon dioxide , and water(passive) are composedComets
After all , why else did people wantto discovercomets so badly
water present in the upper atmosphere are thought ... such asto originatefrom impacting comets
in which armchair astronomers have used SOHO datato discovercomets
by SOHO Comets(passive) discovered byComets
of rock(passive) are composedAn insane " Comets
that images taken by the SOHO spacecraft have been usedto discovercomets
amateur astronomersdiscovercomets
amateur astronomersdiscoveringcomets
by amateur astronomers(passive) are ... discovered by Comets
by amateur astronomers(passive) discovered bycomets
amateur astronomerscan ... do discovercomets
by amateur astronomers(passive) are ... discovered Comets
Amateur astronomershave discoveredcomets
Four other amateurs , in two teams of two , used their own CCD 'sto discovercomets
of water in the form of ice , dust , frozen carbon dioxide and ammonia(passive) are composedComets
Caroline Herscheldiscoveredcomets
the Oort cloud ... mass extinctions on Earthwhere ... originatecomets
by the Panoramic Survey Telescope and Rapid Response System(passive) discovered bycomets
Professional astronomersdiscovercomets
even amateur astronomers have used themto discovercomets
by the spacecraft(passive) discovered bycomets witnessed by
by the LINEAR project List of comets(passive) discovered bycomets
of ice , dust , and rocky debris(passive) are composed Comets
the SOHO and STEREO spacecraft(passive) discovered bycomets
an oort cloudwhere ... originatecomets
this missiondesignedthis mission
their periodic orbits around the sundiscoveredtheir periodic orbits around the sun
two new planets , Uranus and Neptuneto discovertwo new planets , Uranus and Neptune
the Delugehad causedthe Deluge
the solar systemwhen ... originatedthe solar system
them ... howeverdiscoveredthem ... however
them and othersdiscoveredthem and others
in the outer parts of the solar systemto originatein the outer parts of the solar system
individually or jointlydiscoveredindividually or jointly
from the Oort Cloud , which is a vast area full of frozen rocks and ice near the edge of the solar systemoriginatefrom the Oort Cloud , which is a vast area full of frozen rocks and ice near the edge of the solar system
in the Oort Cloud and Kuiper Beltoriginatein the Oort Cloud and Kuiper Belt
this and that the blue comets are the dangerous onescausethis and that the blue comets are the dangerous ones
from the fragmentation of one giant parent comet several hundred years agooriginatefrom the fragmentation of one giant parent comet several hundred years ago
in the Oort cloudto originatein the Oort cloud
asteroidsto discoverasteroids
within the asteroid belt beyond the snow line , which may have provided a source of water for Earth ' s oceanshad been discoveredwithin the asteroid belt beyond the snow line , which may have provided a source of water for Earth ' s oceans
extinction eventscan causeextinction events
widespread concerncausedwidespread concern
in the outer solar systemto originatein the outer solar system
mainly of waterare composedmainly of water
from beyond the orbit of Neptuneoriginatefrom beyond the orbit of Neptune
in solar systemdiscoveredin solar system
their extinctioncausedtheir extinction
the most impactscausethe most impacts
within the Kuiper belt , which is much closer to the inner Solar System than the Oort cloudoriginatingwithin the Kuiper belt , which is much closer to the inner Solar System than the Oort cloud
mass extinctionswould causemass extinctions
from two regions in the Solar System , the Kuiper Belt and the Oort cloudoriginatefrom two regions in the Solar System , the Kuiper Belt and the Oort cloud
in the Kuiper Belt region or the Oort Cloudoriginatingin the Kuiper Belt region or the Oort Cloud
from the Oort Cloudoriginatefrom the Oort Cloud
in the Oort Cloud or Kuiper Beltoriginatein the Oort Cloud or Kuiper Belt
from the Kuiper belt and the Oort cloudoriginatefrom the Kuiper belt and the Oort cloud
in the Oort cloud or in the Kuiper beltoriginatein the Oort cloud or in the Kuiper belt
in the Kuiper Belt or the Oort Cloudoriginatein the Kuiper Belt or the Oort Cloud
from the Oort Cloud , and from the Kuiper Beltoriginatefrom the Oort Cloud , and from the Kuiper Belt
from the Kuiper belt and the Oort cloud Kuiper beltoriginatefrom the Kuiper belt and the Oort cloud Kuiper belt
in the Oort Cloud , the outer region of our Solar system , and travel in very elongated orbitsoriginatein the Oort Cloud , the outer region of our Solar system , and travel in very elongated orbits
in a cloud of objects far beyond the orbit of Pluto known as the Oort Cloudmight originatein a cloud of objects far beyond the orbit of Pluto known as the Oort Cloud
in the Oort Cloud , a group of icy planetsoriginatedin the Oort Cloud , a group of icy planets
from the Oort Cloud , the area at the edge of our solar systemoriginatefrom the Oort Cloud , the area at the edge of our solar system
in the Oort Cloud 1originatingin the Oort Cloud 1