Solar system

Scientists are putting a new spin on the creation of binary asteroids

Rather than building an obsolescent, obscenely-over-budget jumbo rocket, NASA should turn to building truly innovative space technologies and plan a realistic lunar landing program

Supermoons are popular in the media, but are they really so different from how our extraordinary moon ordinarily appears?

The world’s first commercial space walk, performed by billionaire Jared Isaacman and SpaceX engineer Sarah Gillis, tested new technology and was practically flawless

Starliner’s first crewed test flight has concluded with a successful touchdown—and two astronauts still in orbit awaiting a different ride home

Wispy whorls on the moon’s surface are as lovely as they are strange. Scientists are starting to unravel their origins

Even Earth’s mightiest telescopes aren’t up to the task of imaging Apollo lunar landing sites. A lack of resolution is the biggest reason why

The Polaris Dawn mission—a partnership between SpaceX and billionaire Jared Isaacman—will soar to historic heights and attempt the first-ever commercial spacewalk

Surging solar activity means enormous sunspots are in the space-weather forecast. Here’s how to view them safely

New evidence points to a carbonaceous asteroid from the outer solar system as the culprit for Earth’s most recent mass extinction

An underground Martian ocean could hold enough liquid to cover the Red Planet with a mile of water

Early risers get a double sky treat: a Mars and Jupiter conjunction and the Perseid meteor shower will occur at once