Acting NTSB Chairman Christopher Hart briefs the news media on Saturday, soon after arriving at the Mojave Air & Space Port to begin an investigation into the loss of Virgin Galactic’s SpaceShipTwo.
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Even though it doesn’t obey any earthly speed limit and has a space-suited mannequin for a driver, Elon Musk’s Tesla Roadster won’t drive up his insurance rates anytime soon. Researchers say the sports car won’t have a really close encounter with Earth until 2091 and could last millions of years before getting totaled in a planetary crackup.

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Elon Musk revises Mars plan, hopes for boots on ground in 2024
SpaceX plans to begin construction of a new rocket and spacecraft next year that could lead to human landings on Mars as early as 2024, scaling up technologies currently being perfected with the company’s Falcon 9 family of boosters to ensure reliability, reusability and, as a result, realistically low costs, founder Elon Musk said Friday.