Russian engineers are betting that a radically different rocket engine can compress the long slog to Mars into something closer to an interplanetary commute. Their new plasma propulsion prototype, ...

Watch the Dawn Aerospace's Mk-II Aurora Spaceplane light up it rocket engine test flight. Credit: Dawn Aerospace ...

General Galactic, cofounded by a former SpaceX engineer, plans to test its water-based propellant this fall. If successful, it could help usher in a new era of space travel. That's a big “if.” ...

Palestinian officials have recently accused Israel of using American-made thermobaric weaponry in Gaza.

Using the massive SLS rocket, the Artemis II flight is going to shoot four astronauts inside the Orion capsule on a ten-day ...

Silicon Valley used to be a geographic coordinate, but in 2026, it has become a state of mind that has infected every corner of the American economy. From the rocket pads of south Texas to the fusion ...

In response to a query from Ars about the engine test anomalies, Rocket Lab Chief Executive Officer Pete Beck downplayed concerns.

The powerful Vulcan faces its biggest test yet as it prepares to launch on its second national security mission from Florida.

Helion Energy achieves plasma at a stunning 150 million degrees Celsius, well above the threshold to eventually generate stable fusion power.