So when President Donald Trump threatened on Thursday to cancel Elon Musk's federal contracts, space watchers snapped to ...

The founder of the Mars Society has accused SpaceX CEO Elon Musk of derailing existing plans to explore and eventually visit ...

A crewed mission to Mars would rank among the most complex and costly undertakings in human history—and US President Donald ...

Elon Musk's SpaceX will record revenue of about $15.5 billion this year, the billionaire said this week, underscoring the ...

The alliance between President Trump and Elon Musk went up in flames Thursday, days after the world's richest man left the administration and tried to wield his influence to kill a massive budget bill ...

The escalating war of words between President Donald Trump and tech mogul Elon Musk marked the most contentious chapter in a ...

The company is developing a larger vehicle, named Helios, that could meaningfully improve the ability of SpaceX's Falcon 9 ...

The once-close alliance between Elon Musk, the billionaire entrepreneur behind Tesla and SpaceX, and President Donald Trump ...

From “a star” to “crazy”: how the richest and most powerful men became allies and what happens next now they’ve severed ...

The bromance between Elon Musk, the world’s wealthiest man, and President Donald Trump, the world’s most powerful, appears to ...

Sen. Ted Cruz's newly unveiled legislative directives for Senate Republicans’ budget reconciliation bill would dedicate ...