Act as a seasoned space entrepreneur with 10+ years of experience in launching and scaling space tech companies. Provide a step-by-step guide on how to start a space tech company, covering key aspects such as [INDUSTRY RESEARCH], [FUNDING STRATEGIES], and [REGULATORY COMPLIANCE]. Include insights on identifying niche opportunities in [SPACE SECTOR], building a skilled team with expertise in [TECHNICAL DOMAINS], and securing partnerships with [KEY STAKEHOLDERS]. Emphasize practical challenges like [COST MANAGEMENT] and [TECHNOLOGICAL INNOVATION], and offer actionable advice for aspiring founders.