Human spaceflight has been racking up new milestones. But we’re still grappling with a fundamental question: Why go in the first place?

SpaceX managed to land the upper section of its Starship rocket intact in the Indian Ocean. Towing it to Australia, though, is proving even harder.

Elon Musk says SpaceX is serious about building factories on the Moon as the company looks toward long-term lunar exploration ...

SpaceX’s $300 billion swing in market value this past week put Musk back in grind mode, having to execute on highflying ...

SpaceX’s SEC filings describe lunar satellite factories, electromagnetic launchers, and robotic mineral mining. The founders ...

Musk outlined his vision to investors after SpaceX posted a $542-million loss from its space launch sector in its first ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

Elon Musk believes the future of humanity won't be decided on Earth, but on Mars. His plan goes far beyond rockets, aiming to build a self-sustaining city capable of supporting millions of people on ...

Elon Musk, the great disruptor of our time, the enigmatic, egomaniacal ultra-billionaire whose bold claims and brash decisions have come to define a modern era, is boringly predictable. For close to a ...

SpaceX founder Elon Musk says the company has a plan to recover the upper-stage of its Starship rocket after it landed intact ...

SpaceX founder Elon Musk says the company has a plan to recover the upper-stage of its Starship rocket after it landed intact in the Indian Ocean.