I am pretty sure you mean the tail of comets which the ancient Greek reffered to as coma, (κόμα -> κόμη{comi}) meaning hair or hair style.
The word comet was derived from the Greek word cometes, meaning "hairy star," because ancient astronomers described comets as "hairy" or having a tail-like appearance. This description was used to differentiate comets from other celestial objects in the night sky.
The word that means star shaped mark in Greek is "asterisk." It comes from the Greek word "asteriskos," which means little star.
The Greek root word of "astronomically" is "astron," which means star.
The prefix "astro-" means star. It is derived from the Greek word "astron," which means star.
The Greek root word of astronomy is "astron," which means star.
'Aster' means star, referring to its flower shape.
Asterisk is dervied from the greek word "asteri", which means star. That is why the asterisk is star shaped.
The prefix astro means the Greek word 'star'.
Asteroid comes from the Greek word Aster meaning star.Other words that have Aster as there route :-Asterism(Star Constellation), Disaster (Bad Star), Asterisk (Small Star),
Surprisingly, yes. The word is Latin, but its elements were borrowed from Greek. Dis- means bad, unfavorable, negative (eg. displeasure) -aster comes from the greek word άστρον (transliterated astron, pronounced ass-tron) which means a star. Literally the word means unfavorable star influence, and it gradually evolved to its modern meaning. The Greeks used (and still use) another word for it: catastrophe.
Space -------------------------------- Astro is greek for "star." Here's a source to back up my answer: http://www.archives.nd.edu/cgi-bin/lookit.pl?latin=astro
Astronomy and astronaut have the root 'Astros' which means star.