Crossword Heaven

Answer: OORT

OORT is a crossword puzzle answer that we have spotted 24 times.

• __ cloud (theoretical source of comets)
• ___ cloud (cosmic debris)
• ___ cloud (astronomical sighting)
• Astronomy's ___ cloud
• ___ cloud (region of comets far beyond Pluto)
• ___ cloud (theoretical source of comets)
• ___ cloud (solar system outlier)
• Dutch astronomer Jan
• ___ cloud (distant part of the solar system)
• __ cloud: solar system region beyond Pluto
• ___ cloud (solar-system region)
• Solar system's comet-intensive cloud
• ___ cloud: solar system region beyond Pluto
• Kind of cloud
• Dutch scientist for whom an astronomical "cloud" is named
• Dutch astronomer who found the first evidence of dark matter
• Dutch astronomer who lent his name to a cloud
• ___ cloud (source of comets)
• ___ cloud: distant solar system region
• ___ cloud: remote solar system region
• ___ cloud: comet-filled region in interstellar space
• Dutch astronomer with an eponymous "cloud"
• Dutch scientist with an eponymous "cloud"
• Dutch astronomer with an eponymous ice cloud