President Trump says we are going to Mars, and his friend Elon Musk has demonstrated a capacity to make it happen.

Such an effort to concentrate authority in an all-controlling executive has a striking parallel in Europe: the remaking of Hungary under its longtime prime minister, Viktor Orban. Since coming to ...

The tech billionaires could collaborate on a "humanity-saving" moon base in case an asteroid hits Earth, Douglas MacKinnon wrote.

In the coming years, an unprecedented number of people will leave planet Earth—but it’s becoming increasingly clear that deep ...