Astronomy

A team of archaeoastronomers suggests the Pyramid of the Moon in Teotihuacán, Mexico, may have been constructed to align with the movement of the sun.

Ancient Mesoamerican 'Pyramid of the Moon' May Align With Summer and Winter Solstices

New research suggests the monument in Teotihuacán, along with the larger Pyramid of the Sun, were designed based on astronomical movements

Meteors fly above Sydney, Australia, on July 28, 2022. The Southern Delta Aquariids will be easiest to see from the Southern Hemisphere, but will still be visible at southern latitudes in the United States.

How to Watch the Southern Delta Aquariids Meteor Shower

Though not as prolific as the Perseids, this annual spectacle is 'scientifically interesting' because its comet of origin remains a mystery

Astronomers released 25 new images to celebrate the 25th anniversary of the Chandra X-Ray Observatory's launch.

See 25 Stunning Images of the Cosmos From the Chandra X-Ray Observatory as It Celebrates 25 Years in Space

Chandra, the world’s most powerful X-ray telescope, has been peering at black holes, stellar explosions and dark energy for a quarter-century

Apollo 11 astronauts watched the Earth rise above the moon’s horizon on July 20, 1969.

Apollo Astronauts Left American Flags, Boots and Even Poop on the Moon. Here's Why These Artifacts Matter

Fifty-five years after the first human lunar landing, scholars and experts are looking to preserve the past as more nations and companies undertake moon missions

An artist's rendition of the eight planets in our solar system. The planets are depicted closer together than they really are.

Astronomers Propose New Criteria to Classify Planets, but Pluto Still Doesn't Make the Cut

The new definition would define planets based on mass, rather than more ambiguous shape and size characteristics

The Penguin and the Egg are about 100,000 light-years apart.

James Webb's Newest Image Shows a Giant Penguin and an Egg

NASA released the dazzling portrait to help celebrate the two-year anniversary of the release of Webb's first images

An artist’s depiction of HD 189733b encountering an eruption of x-rays from the star it’s orbiting

This Nearby Exoplanet Is Hot, Dangerous—and Smells Like Rotten Eggs

Located about 64 light-years away from Earth, the world is the first place astronomers have detected hydrogen sulfide outside our solar system

Created more than 2,000 years ago, the Antikythera mechanism tracked the movements of celestial bodies.

Gravitational Wave Scientists Are Unraveling the Mysteries of the World's Oldest Analog Computer

A new study challenges a core assumption about the Antikythera mechanism, a 2,000-year-old device that inspired the latest "Indiana Jones" film

One of Cassini's last looks at Saturn and its main rings from a distance, produced by combining images taken in October 2016

Here’s What We’ve Learned About Saturn Since Cassini Entered Its Orbit 20 Years Ago

The Cassini-Huygens mission increased our understanding of the planet’s rings and moons

An abandoned house in the Namib Desert with the Milky Way rising above it.

See Ten Awe-Inspiring Images From the Astronomy Photographer of the Year Contest

Auroras, nebulas and stars take the spotlight in this space-themed competition, alongside shots of our own sun and moon

The International Space Station, as seen from the Space Shuttle Discovery in 2007.

NASA Will Pay SpaceX Up to $843 Million to Destroy the International Space Station

After the end of this decade, the company will guide the aging laboratory into the Pacific Ocean, where many retired spacecrafts have been deposited

The European Space Agency's Planetary Defense Office tracks and observes near-Earth objects passing by our planet, such as those shown in this illustration. 

Two Massive Asteroids Will Fly Past Earth This Week. Here's What to Know

Within 42 hours of each other, the pair of large asteroids, which both have no chance of impacting our planet, will approach Earth as they orbit the sun

Jupiter's Great Red Spot is a large storm that has persisted for at least 190 years.

Jupiter's Signature Red Spot May Have Evolved More Than Once

The planet's massive storm, known as the Great Red Spot, seems to be different from a spot first observed at roughly the same location in the 17th century, a new study finds

An illustration of the Boeing CST-100 Starliner spacecraft, currently docked to the International Space Station as engineers troubleshoot helium leaks and thruster issues.

Starliner Astronauts Will Remain on Space Station Until July Amid Technical Issues

NASA and Boeing have delayed the crewed mission's return to Earth again, as engineers assess helium leaks and a thruster issue on the spacecraft's service module

During a major lunar standstill, the northernmost and southernmost moonrise and moonset are at their farthest apart.

A 'Major Lunar Standstill' Is Happening This Year—and Friday's Full Moon Offers 'Dramatic' View

From now through much of next year, the moon will periodically rise and set at its most extreme points, thanks to a rare celestial phenomenon that only occurs every 18.6 years

The Milky Way spreads across the night sky above the Vera C. Rubin Observatory. 

This Revolutionary New Observatory Will Locate Threatening Asteroids and Millions of Galaxies

Beginning next year, the Vera C. Rubin Observatory will use the world’s largest digital camera to give us a whole new view of the universe

An artist's rendering of the Voyager 1 spacecraft entering interstellar space.

After Months of Glitches and Gradual Fixes, Voyager 1 Is Fully Operational Once Again

Currently 15 billion miles away from Earth, one of NASA’s longest-tenured spacecraft is back from the brink after a technical failure last year put its future in question

Purple squares illustrate auroras on Mars, as detected by NASA’s MAVEN orbiter between May 14 and May 20. The brighter the purple, the more auroras present.

Mars Was Hit With a Solar Storm Days After Earth's Aurora Light Show, NASA Says

Studying this event could hold lessons for scientists about how to protect astronauts from radiation on future trips to the Red Planet

The planet-forming disk is made of gas and dust.

This Giant Cosmic 'Butterfly' Is a Planet-Forming Disk

New research has confirmed that the celestial object may be the biggest of its kind ever found

The Milky Way is visible at Black Canyon of the Gunnison National Park in western Colorado.

These National Parks Are Hosting Astronomy Festivals in 2024

Get outside, ditch the light pollution and marvel at the cosmos on these protected public lands

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