The experimental fusion reactor sustained temperatures of 180 million degrees Fahrenheit for a record-breaking 48 seconds.

Conventional helium production comes with enormous carbon emissions, so scientists are looking for alternatives in places like Yellowstone, Tanzania's Rukwa Rift and India's Bakreswar-Tantloi province.

The experimental fusion reactor sustained temperatures of 180 million degrees Fahrenheit for a record-breaking 48 seconds.

General Atomics and NASA achieved an important milestone on the road to using nuclear-powered rockets by testing a new fuel and finding it can withstand extreme conditions.

On Episode 152 of This Week In Space, Rod Pyle and Tariq Malik host Robert O'Brien for a deep dive into nuclear propulsion technology for space exploration

Feed and inspire a kid's thirst for space with these best book picks.

The United States military test-launched an unarmed nuclear-capable intercontinental ballistic missile from Vandenberg Space Force Base on Nov. 5, 2024.

Deals Less than 16 hours left to save just over $190 on the Celestron NexStar 130SLT computerized telescope with this Amazon Prime Day telescope deal!

Deals We adored the DJI Mini 3 Pro when we tested it, and now it's $216 off in the Prime Day drone deals.

Uncontrolled space debris reentries are of growing concern for air traffic, as SpaceX's recent Starship Flight 7 showed.

Scientists suggest lunar astronauts can stay fit by running sideways within a Wheel of Death.

The space environment is harsh and full of extreme radiation. Scientists designing spacecraft and satellites need materials that can withstand these conditions.

The moon is unlike anything else in the solar system. So how did our planet end up with such a special moon?

Astronomers have discovered that sulfur may be a key to helping us narrow down our search for life on other planets.

The Sun's activity is what gives us beautiful auroras — but it also has dramatic negative effects on satellites that go around Earth in a low orbit.

Astrophotographer Miguel Claro captured an incredibly detailed timelapse of solar activity, revealing a roiling sun sprouting several massive loops of plasma.

Earth's Mightiest Heroes are assembling again. Avengers: Doomsday is finally in production and has unveiled its complete roster.

Astrophotographer Miguel Claro captured Comet C/2023 A3 (Tsuchinshan-ATLAS) from the Dark Sky Alqueva reserve in Portugal on Oct. 13, 2024 as the comet was displaying an 'anti-tail.'

The proposed nuclear reactor, which could be transported and assembled without human assistance, would provide energy to a lunar base that Russia and China have agreed to build together.

The sun's magnetic field could soon slam into Earth's, triggering stunning light displays.

Astrophotographer Miguel Claro caught the International Space Station as it crossed in front of the sun, making for a truly epic time-lapse photo.

On May 21, 2010, Japan launched the first successful solar sail Ikaros into space.

On Oct. 14, an annular solar eclipse will turn the sun into a spectacular "ring of fire." Here's what you can expect from the celestial phenomenon.

Get ready for the annular solar eclipse on Oct. 14! The famous 'ring of fire' is not to be missed.

Elon Musk and President Trump continue to advance the narrative that NASA astronauts from Boeing's Starliner mission were "abandoned" in space.