Questions with the keyword 'comet'

• when is Halley’s comet next due? will I be able to view it? by eshanip1017 to Alan, Nick Comments: (No comments so far )
• How is the sodium tail of a comet made? by to Alan Comments: (No comments so far )
• Why does a comet have two tails and why do the travel in ellipse shapes? by to Alan Comments: (No comments so far )
• What gases do comets give off? by alexanderg123 to Alan Comments: (No comments so far )