"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

The Space Force's top-secret aircraft has been in a highly elliptical high Earth orbit since December 2023. That U.S. Space Force X-37B Orbital Test Vehicle (OTV-7) has silently slipped past one-year ...

Looking at a distant galaxy means looking back in time.

In a statement released last year by Boeing, builder of the X37B "will perform ground-breaking aerobraking maneuvers to take the dynamic spaceplane from one Earth orbit to another while conserving ...

Earth is now closer to the sun than at any other time of the year. Here's why our planet's axial tilt, not proximity to the ...

NASA astronaut Don Pettit has snapped a striking shot of the super-bright comet racing past our planet for the first time in ...

In January 2025, Venus, Mars, Mercury, and Jupiter will align within the elliptical plane, offering a striking celestial ...

At the other extreme of mass, supergiant galaxies can encompass a hundred trillion stars in orbit around the galactic ... three types of galaxies: spiral, elliptical, and irregular.

Robotic vehicles from Firefly Aerospace of Texas and Ispace of Japan parted ways early Wednesday after being launched on the ...

It has been more than a week since reports first emerged about a "glowing ring of metal" that fell from the sky and crashed ...

Blue Origin’s New Glenn rocket achieved orbit on its long-awaited first launch Jan. 16, although the company failed in its ...