SpaceX Raises Another $50.2M

Hawthorne-based SpaceX, the commercial rocket firm headed by PayPal co-founder Elon Musk, has raised another $50M in funding, according to a regulatory filing by the firm Tuesday. Source of the new funding was not disclosed. SpaceX has previously raised funding from the Founders Fund, and others, as well as significant backing from Musk's own personal fortune. Musk is also CEO of electric car firm Tesla Motors.