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.

Sea-based launches are hitting their stride. That could lead to a lot more space missions with a lot less red tape.