President Donald Trump took to social media this week to announce he had directed SpaceX CEO Elon Musk to “go get” two NASA ...

Orbital dynamics show that President Trump’s pledge to land astronauts on Mars couldn’t happen until 2029 at the earliest.

It’s one of the more obviously flawed ideas embraced by both President Donald Trump and his right-hand man Elon Musk: That government should be run like a business.

Following reports that Musk has overstayed his welcome in the president’s inner circle, Trump asks the billionaire to “go get” two stranded astronauts.

Federal agencies have offered exits to millions of employees and tested the prowess of engineers — just like when Elon Musk ...