Firefly Aerospace, which successfully landed on the moon in March, is set to go public on Thursday under the stock ticker symbol FLY.

Another space stock is going public. But this isn't just any old space stock -- this one already landed on the moon.

Northrop Grumman-backed Firefly Aerospace raised the proposed price range for its U.S. initial public offering on Monday and is now targeting a valuation of up to $6.04 billion in its U.S. listing, underscoring investor interest in space-related ventures.