President Donald Trump and Elon Musk are turning their focus to putting American astronauts on Mars.

As companies like SpaceX and Virgin Galactic make waves in space tourism, how long does the rest of the world have to wait ...

Mr. Bruni is a contributing Opinion writer. Ms. McLean is a contributing editor at Vanity Fair and an author of “The Smartest ...

President Donald Trump on Thursday shrugged off an ugly back-and-forth between tech CEOs Elon Musk and Sam Altman that pitted one of Trump’s most visible lieutenants against a key participant in a ...