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Astronomersdiscovernew planetary nebula
ultraviolet lightcausesthe planetary nebula to fluoresce
by amateur astronomer Astronomers(passive) discovered byplanetary nebula
a dying star as it releases dust and gas(passive) caused bya planetary nebula
by astronomer William Herschel(passive) discovered bya planetary nebula
by amateur astronomer Scientists(passive) discovered byplanetary nebula
by amateur astronomer NASA(passive) discovered byplanetary nebula
by amateur astronomer The Sky(passive) discovered byplanetary nebula
French astronomer Antoine Darquier in 1779 and cataloged only days later by Charles Messier(passive) discovered bya planetary nebula
Charles Messier in 1764(passive) discovered bya planetary nebula
by amateur astronomer Researchers(passive) discovered byplanetary nebula
by amateur astronomer(passive) discovered byplanetary nebula
by an amateur astronomer(passive) discovered bya planetary nebula
by amateur astronomer(passive) recently discovered bya planetary nebula
by amateur astronomer Its(passive) discovered byplanetary nebula
by Albert George Wilson and the other half by Robert G. Harrington , Rudolph Minkowski , and George Abell on the plates of the first Palomar Observatory Sky Survey ( POSS I(passive) were discovered byold " Planetary Nebula
Albert George Wilson and the other half by Robert G. Harrington , Rudolph Minkowski , and George Abell on the plates of the first Palomar Observatory Sky Survey ( POSS I(passive) were discovered byold " Planetary Nebula
by amateur astronomer Gemini(passive) discovered byplanetary nebula
by amateur astronomer Margaret(passive) discovered byplanetary nebula
by amateur astronomer Blue Origin(passive) discovered byplanetary nebula
by amateur astronomer Asteroids(passive) discovered byplanetary nebula
then collapse into a white starcausinga planetary nebula
William Herschel(passive) was discovered byThe planetary nebula
by William Herschel(passive) discovered bythe planetary nebula
by William Herschel(passive) discovered bya planetary nebula
by William Herschel(passive) was discovereda planetary nebula
by William Herschel William Herschel(passive) discovered bya planetary nebula
by amateur astronomer New study(passive) discovered byplanetary nebula
by Messier(passive) discovered byPlanetary Nebula
by Herschel(passive) discovered bya planetary nebula
the onecausedthe planetary nebula
by NASA(passive) discovered bythe planetary nebula
Such explosions , from a supernova explosion or by pulsationsleadsto planetary nebula
by Karl Ludwig Harding(passive) discovered bya planetary nebula
Karl Ludwig Harding(passive) discovered bya planetary nebula
telescopically ... Herschel(passive) had been discovered ... byA planetary nebula
by Rudolph Minkowski(passive) was discovereda planetary nebula
pulsationsleadingto a planetary nebula Planetary nebula
by the waywould ... resultin a planetary nebula
in 2005(passive) was discoveredplanetary nebula
within a globular clusterdiscoveredwithin a globular cluster
to contain planetary knotsdiscoveredto contain planetary knots
within a globular cluster in 1928discoveredwithin a globular cluster in 1928
in the year 1764ever discoveredin the year 1764
everdiscoveredever
everto ... be discoveredever
in 1764discoveredin 1764
in 1764discoveredin 1764
back in 1764to be discoveredback in 1764
to have cometary knotsdiscoveredto have cometary knots
to contain cometary knotsdiscoveredto contain cometary knots
to have cometary knots , which many planetary nebulae were later discovered to containdiscoveredto have cometary knots , which many planetary nebulae were later discovered to contain
that has knots of nebulositydiscoveredthat has knots of nebulosity
though not yet termed as suchdiscoveredthough not yet termed as such
of dust , molecular gas , and ionized materialcomposedof dust , molecular gas , and ionized material
it was given the designation ofdiscoveredit was given the designation of
in the 1780s with astronomer William Herscheloriginatedin the 1780s with astronomer William Herschel
Description(passive) was discoveredDescription
in an open clusterdiscoveredin an open cluster
from the death of our Sunresultingfrom the death of our Sun
from gases and dustresultfrom gases and dust
of the gascomposedof the gas
in an open cluster.[7discoveredin an open cluster.[7
in an open cluster Open clusterdiscoveredin an open cluster Open cluster
in an open clusterdiscoveredin an open cluster
from a dying starcan resultfrom a dying star
within itdiscoveredwithin it
from the death of medium and low mass starsmay resultfrom the death of medium and low mass stars
in an open cluster that is agreed upon by independent researchersdiscoveredin an open cluster that is agreed upon by independent researchers
in an opendiscoveredin an open
in 1787discoveredin 1787
from the demise of a sun - like star through the various evolutionary stages to its present white dwarf statusresultingfrom the demise of a sun - like star through the various evolutionary stages to its present white dwarf status
from the near - final processes of an old starresultingfrom the near - final processes of an old star
in 2011discoveredin 2011
in an old Hyades - age open clusterdiscoveredin an old Hyades - age open cluster
in SCIENCEdiscoveredin SCIENCE
it was given the designation ofdiscoveredit was given the designation of
By Amateur AstronomerDiscoveredBy Amateur Astronomer
in 1882discoveredin 1882
in 1928discoveredin 1928