Fair value...20$+?, page-20

There isn't any uncertainty with space - page 61 of the annual report is really clear:

"The consolidated entity operates in Australia, USA, Singapore and Germany in the development, manufacture and sale of telescopes and dome enclosures, laser satellite tracking systems and the manufacture of electro‐optic re control systems."

There is no other business at this time.

"EOS’s laser‐based space surveillance systems have been demonstrated in customer trials and EOS is now well‐placed to be a major contributor to the next generation of space tracking capability. Future business is dependent on large government contracts being awarded in the space sector.
In addition, EOS has substantial space resources in its own right, and may enter the market for space data provision in the future.
The space sector also manufactures and sells telescopes and dome enclosures for space projects."

In other words: EOS has demo'd stuff but has no orders.  Any future orders will be dependant on as yet unannounced government spending.  We have a lot of data that we might get around to figuring out how to sell - at the moment the space division is building telescopes and enclosures.