Samantha Mathewson

The inaugural launch of Europe's new Ariane 6 heavy-lift rocket is slated for today. Here's how to watch it live.

A NASA asteroid-hunting mission is coming to a close, paving the way for the next generation of planetary defense efforts.

Mysterious swirling patterns seen on the moon's surface may be linked to underground magma activity, a new study suggests.

Two small satellites were recently ejected from the International Space Station to begin scientific experiments in low Earth orbit, and their leap into freedom was caught on camera.

The Hubble Space Telescope has snapped a stunning new photo of infant stars nestled in a glowing cocoon of gas and dust.

SpaceX just announced a more compact version of its satellite internet antennas called Starlink Mini that are small enough to fit in a backpack.

Scientists won't only study the rocks NASA's Perseverance rover has cached throughout its trek across Mars. They want the fresh Mars air, too.

The rotation of Earth's inner core began to slow down more than a decade ago, altering the length of our days by fractions of a second.

Virgin Galactic shared an awe-inspiring video from the final flight of its VSS Unity space plane.

New research offers the most precise measurements yet of pulsating Cepheid stars, which may hold clues about the immense size and scale of our universe.

Soil sourced directly from the lunar surface could help astronauts establish and sustain a permanent presence on the moon.

The Gum 3 nebula, which resembles a swimming koi fish, is captured in a stunning new photo from the European Southern Observatory's VLT Survey Telescope.

A gorgeous new photo from the Hubble Space Telescope, which is down to two functioning gyroscopes, captures the barred spiral galaxy NGC 3059.

Europe's new Ariane 6 heavy-lift rocket is set to launch for the first time on July 9 after a series of delays.

Crew members selected for a planned flight around the moon funded by Japanese billionaire Yusaku Maezawa shared public feelings of disappointment after the mission's cancellation.

ESA's Mars Express orbiter surveyed the vast Nili Fossae trenches, which formed following a massive impact billions of years ago, when water flowed over the Martian surface.

Japan plans to launch the world's first wooden satellite this year, in an effort to reduce the environmental impacts of reentering spacecraft.

China's reusable space plane has released another unknown object into Earth's orbit during its third mission.

Japan's Smart Lander for Investigating Moon (SLIM) mission failed to respond to a signal sent Monday — but all hope is not lost.

NASA's new X-59 supersonic jet has successfully completed its Flight Readiness Review, marking a pivotal step towards its first flight.

A bejeweled galaxy shines brightly in a stunning new photo from the Hubble Space Telescope.

The four zebrafish China sent to its space station are thriving after spending almost a month in orbit.

Construction of the Extremely Large Telescope has reached another milestone, with the completion of its dome's steel skeleton. A new image of the site includes a stunning view of the Milky Way.

An innovative telescope design has proven successful for daytime skywatching, opening new doors for uninterrupted observation of the cosmos.

Some Hawaii residents oppose plans from the U.S. Space Force to build a suite of new telescopes designed to track and prevent satellites in orbit from colliding.