Board Thread:General Discussion/@comment-26066301-20150201211610/@comment-16436805-20150202004651

In the IDW's "The New Animated Series" comics Splinter goes out to see a comet crossing the sky on Karai's birthday every year, he showed the comet to her when she was a baby, but her snake self some how also remembered to look at the sky that night.

That's the only reference of a comet we have, but I don't think they'll use it.

Although, if they did... I think Karai would've said "comet" to mark a meeting with the turtles in her birthday, when the comet would pass by again. But it's unlikely.