Firefly Aerospace will begin trading on the Nasdaq on Thursday after raising $868.3 million in the largest U.S. listing this year by a space tech company. Firefly — which became the second private enterprise to achieve a lunar landing five months ago — priced the IPO at $45 per share,

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

Firefly Aerospace has said it expects to price shares in its upcoming IPO $35 to $39 a piece, a deal that would value the rocket maker at about $5.5 billion.