Solar system's comet-intensive cloud
Else clues• ___ cloud (astronomical sighting)
• ___ cloud (comet-filled region of space)
• ___ cloud (cosmic debris)
• ___ cloud (distant part of the solar system)
• ___ cloud (home for comets)
• ___ cloud (region of comets far beyond Pluto)
• ___ cloud (solar system outlier)
• ___ cloud (solar-system region)
• ___ cloud (theoretical source of comets)
• ___ cloud: solar system region beyond Pluto
• Astronomical cloud's name
• Astronomy's ___ cloud
• Cloud of comets and planetoids
• Comet astronomer
• Comet astronomer, Jan Hendrik
• Comet-bearing cloud
• Dutch astronomer
• Dutch astronomer Jan
• Dutch scientist for whom an astronomical cloud is named
• Kind of cloud
• Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)