Firefly Aerospace Inc.’s stock is expected to receive a warm welcome on Wall Street when it debuts Thursday, after the moon-exploration company’s upsized initial public offering priced above the expected range, which was already increased.

Firefly Aerospace, a Texas-based commercial space company known for its lunar landers, raised $868 million in an upsized IPO.Why it matters: The IPO window is open wide enough to fly a spaceship through it,