Astronomy

The source of Earth's water is one of the most compelling questions facing scientists. Earth's habitability depends on multiple factors, but water is the basis for life, and it had to come from somewhere. Did comets and meteorites deliver it after Earth formed? Or did water become part of our planet as it formed?

When astronauts live on the Moon permanently, they're going to need a safe habitat, ideally made out of local construction material. A new paper suggests that lunar astronauts could cover a 17-meter crater with a dome made from a lunar regolith-based geopolymer. A 3D printer would extrude a paste made of lunar regolith that would be sintered together into the shape of the dome. This would provide protection from radiation and could even maintain a pressurized habitat.

An international team of astronomers have discovered an Earth-size exoplanet on a very tight orbit around its star. It completes an orbit in only 5 hours and 22 minutes. Unfortunately, the planet will either be torn to pieces or crash into its star in about 31 million years.

The basaltic meteorite is a piece of lunar rock that formed in a lava flow 2.35 billion years ago, long after volcanism on the moon was supposed to have ended.

Neuroscientists have found that the brain can wake up in different ways, explaining why some mornings feel like a dream and some feel like a disaster

NASA astronaut and Expedition 73 Flight Engineer Anne McClain shows off a hamburger-shaped cake to celebrate 200 cumulative days in space for JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi (out of frame) since his first spaceflight as an Expedition 48-49 Flight Engineer in 2016.

Titan shadow transit seasons occurs just once every 15 years.

The UK's Online Safety Act is intended to stop children from accessing pornography online, but its potential implications are much wider reaching

The UK's Online Safety Act is intended to stop children from accessing pornography online, but its potential implications are much wider reaching

All of the telescopes here are easy to set up on a tabletop, making them an easy option for beginners and professional stargazers.

China's Tianwen 2 mission captured stunning views of Earth and the moon from deep space just days after launch.

'It's fun to see Una come down on someone. We don't get to see that very often.'

Up to 200 worlds investigated by NASA's exoplanet-hunting TESS satellite could be bigger than predicted, a finding that could impact our search for alien life.

Astronomers unveiled a striking view of the new interstellar visitor 3I/ATLAS on its journey toward the inner solar system.

These are the best telescopes for professional astrophotography and will allow you to capture high-definition images of planets, nebulas and galaxies.

Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever

On July 17, 1975, an American Apollo crew and a Soviet Soyuz crew met up in Earth orbit for the first time, setting the foundation for continued cooperation in space over the past 50 years.

These modern-day Gorn are a major upgrade on the lizard man Captain Kirk battled in the Original Series.

NASA moved its payload adapter at the Space Flight Center in Huntsville to prepare for the upcoming Artemis IV mission

The left-hand side of the moon will appear lit by direct sunlight, with the right bathed in shadow.