SpaceX has submitted its S-1 filing to regulators, formally launching the process for what is expected to be one of the largest initial public offerings in market history. The move confirms long-running speculation that Elon Musk's space venture would eventually tap public markets.

The filing provides the first detailed look at SpaceX's financial health and operational scale, revealing critical metrics for potential investors. The company's valuation has been a subject of intense debate, with some analysts suggesting it could approach $2 trillion.

Motley Fool analysts have pored over the prospectus, highlighting both promising growth drivers and potential risks. They characterize the offering as monumental, given SpaceX's dominant position in launch services and its Starlink satellite internet business.

Investors now have a concrete timeline and data set to evaluate the opportunity. The size of the offering — potentially the largest ever — could reshape the space investment landscape and attract a wave of new capital to the sector.

Critics warn that SpaceX's lofty valuation may be disconnected from near-term profitability, especially given the capital-intensive nature of its operations and ongoing regulatory hurdles.