virgin galactic太空旅行關於「Virgin galactic presentation」標籤，搜尋引擎有相關的訊息討論：
Events & Presentations - Virgin Galactic - Investor Relationsinvestors.virgingalactic.com › events-and-presentationsVirgin Galactic: Homewww.virgingalactic.cominvestor presentation - SEC.govwww.sec.gov › Archives › edgar › data › tv524921_ex99-2Virgin Galactic - YouTubewww.