President Trump’s top economic advisers stressed on Sunday that they would not be deterred by a recent court decision that declared many of the administration’s tariffs to be illegal, as they pointed out a variety of additional authorities that the White House could invoke as it looks to pressure China and others into negotiations.

President Donald Trump is withdrawing the nomination of tech billionaire Jared Isaacman, an associate of Elon Musk, to lead NASA

The structure of one of the ejections has captured the attention of the scientific community due to its potential for geomagnetic impact.

A NASA-funded plan to build a large radio telescope on the moon's far side is nearing final approval and could become a reality by the 2030s, researchers say. The ambitious project will help safeguard astronomy from satellite "megaconstellations" — and help scientists unravel more of the radio spectrum.

I'm incredibly excited, as part of the Ars Live series, to host a conversation with some of the very best space reporters in the business this afternoon, May 29, at 3 pm EDT about the future of NASA and its deep space exploration ambitions. You can watch Ars Live here.

The Antarctica ice sheet saw accelerating loss of mass over 20 years, but then the trend suddenly reversed say scientists. So, what happened?

NASA's massive super-pressure balloon has completed a 16-day trip around the Southern Hemisphere — a milestone in high-altitude flight and atmospheric research.