There are 24 pieces of Orange Goo to be found across all of Quasadron IX, just like every other planet. Stellaris Prime is the sole exception to this, with 31 pieces of Orange Goo to be found.

According to the NOAA news release, there are 7,800 species of rust that we know about, and scientists have not yet confirmed whether the goo belongs to one of those species or not.

Orange goo mystery solved after it invaded from skies in one of the world's most remote spots By DAILY MAIL REPORTER Updated: 20:20 EDT, 8 August 2011 ...

Government scientists have concluded that the mystery goo is some kind of crustacean eggs or embryos but have yet to determine whether or not the substance is toxic. Aug. 3, 2011-- locals discover ...