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Astronomy

An artist’s visualization of WASP-127b

Astronomers Discover Supersonic Winds on a ‘Puffy’ Exoplanet, Forming a Record-Breaking Jet Stream

Moving at roughly 20,505 miles per hour along the distant world’s equator, it’s the fastest known jet stream that wraps around a planet

The next several weeks will give skywatchers a chance to see many planets at once.

How to See Six Planets Lined Up in the Night Sky This Month—and Glimpse a Rare Seven-Planet ‘Parade’ in February

While the planets are technically always “aligned” along the same plane in our sky, seeing so many at once is a special opportunity

A section of the new photomosaic of the Andromeda Galaxy, which features 600 fields of view in total from the Hubble Space Telescope.

Check Out the Hubble Space Telescope’s Stunning New View of the Andromeda Galaxy

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth

An artist’s concept of a white dwarf orbiting a supermassive black hole and shedding matter

Astronomers Found Strange, Accelerating X-Ray Pulses Coming From a Black Hole. They Might Be a Sign of an Orbiting White Dwarf

The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary research

Craters at Mercury's poles contain permanently shadowed areas that are some of the coldest sites in the solar system, despite their proximity to the sun.

New, Stunning Images of Mercury’s North Pole Will Help Scientists Study the Planet’s Mysterious Permanent Shadows

The BepiColombo spacecraft captured the photographs during its last flyby of Mercury, a maneuver necessary to propel the mission into orbit around the planet

A composite of enhanced color images of Pluto (lower right) and Charon (upper left), taken by NASA’s New Horizons spacecraft on July 14, 2015.

A Novel ‘Kiss and Capture’ Event Gave Pluto Its Largest Moon, Charon, New Study Suggests

Researchers accounted for the previously overlooked structures of the dwarf planet and moon in computer simulations of a celestial collision

Illustration from a 16th-century Falnama, or Persian Book of Omens

How People of the Past Predicted the Future, From Spider Divination to Bibliomancy

A new exhibition spotlights the ways in which cultures around the world have sought answers in the face of uncertainty

Find your nearest dark-sky site and mark your calendars for these stunning astronomical spectacles in 2025.

11 Dazzling Celestial Events to See in 2025, From a Total Lunar Eclipse to Rare Planetary Alignments

Keep your eyes on the sky this upcoming year for a chance to spot breathtaking meteor showers, a special view of Saturn and a blood-red moon

The Quadrantids only last for about six hours, but they're known for producing fireballs, or bright, fiery streaks that persist longer than average meteors.

How to Watch the Quadrantid Meteor Shower, an Intense Spectacle With a Short but Strong Peak

The skyward show will produce many shooting stars from the evening of January 2 into the early morning hours of January 3—here’s how to make the most of the fleeting celestial event

With its clear, dark skies, Colorado's Browns Canyon National Monument is an ideal spot to admire planets, constellations and the Milky Way.

A New Dark Sky Park in Colorado Offers a Front-Row Seat to the Cosmos

This week, Browns Canyon National Monument, a 21,586-acre protected natural area in central Colorado, achieved International Dark Sky Park certification

The new quarter design featuring Ida B. Wells, the suffragist, journalist and civil rights activist

Women Who Shaped History

These Five Trailblazing American Women Will Be Featured on Quarters in 2025

The U.S. Mint’s American Women Quarters Program has announced its fourth and final group of honorees from throughout American history

Stories in a wide variety of scientific disciplines made our list this year.

The Ten Most Significant Science Stories of 2024

From a total solar eclipse that captivated our continent to record temperatures that scorched the planet, these were the biggest moments of the year

Our most-read stories of the year featured photographer Vivian Maier, underwater caves in the Yucatán Peninsula, auroras and more.

Ten Top Smithsonian Stories of 2024, From a Mysterious Underground Chamber to Dazzling Auroras

The magazine’s most-read articles of the year included a close-up look at the adorable yet venomous pygmy slow loris, a profile of a little-known 20th-century street photographer and a majestic journey with divers into Mexico’s underwater caves

A representation of the evolution of the universe over 13.77 billion years.

James Webb Telescope Confirms the Universe Is Expanding Faster Than We Thought—and Scientists Still Don’t Know Why

The findings suggest that astronomers’ widely accepted cosmology models might be missing something—meaning the longstanding mystery known as the “Hubble tension” continues

An artist's illustration shows the James Webb Space Telescope peering out into the solar system toward the asteroid belt.

Astronomers Detect the Smallest Main Belt Asteroids Ever Found by Repurposing a Technique for Exoplanet Discovery

An unusual approach to spotting tiny asteroids uses James Webb Space Telescope data in a boost for planetary defense research

This image of the Geminid meteor shower, as seen from China, earned first place in the 2021 astrophotography contest by the International Astronomical Union Office of Astronomy Education.

How to Watch the Geminid Meteor Shower This Weekend

The peak of this popular annual meteor shower risks being washed out by an almost full moon this year—but stargazers can still spot shooting stars if they follow the right tips

A Hubble Space Telescope portrait of Jupiter, captured in August 2019, shows the gas giant's cloud bands and storms in detail, including its iconic Great Red Spot.

Look Up for a Dazzling View of Jupiter This Weekend as It Shines Its Brightest of the Year

On December 7, the “king of planets” will line up with the Earth and sun in an event known as opposition. It will be visible all night and offer prime viewing, especially through binoculars or a telescope

Computer simulated global view of Venus' northern hemisphere. 

Did Venus Have Oceans? This Surprising New Study Suggests Not, a Theory That Could Upend the Search for Extraterrestrial Life

The astronomers behind the research looked to the output from the nearby planet’s toxic volcanoes for clues

NASA’s James Webb Space Telescope recently imaged the Sombrero Galaxy with MIRI (its Mid-Infrared Instrument).

See the Sombrero Galaxy Like Never Before, as the James Webb Telescope Captures It in Unprecedented Detail

The mid-infrared light image shows astronomical features that can’t be seen with visible light cameras or in previous infrared views—and in this shot, the galaxy doesn’t look much like a Sombrero anymore

A stock illustration of an asteroid near Earth. Astronomers believe our "mini-moon" originated from the Arjuna asteroid belt.

Earth Bids Goodbye to Its ‘Mini-Moon’ as Astronomers Investigate Where Our Planet’s Asteroid Companion Came From

Preliminary research suggests asteroid 2024 PT5, which stuck around Earth for almost two months, has lunar origins

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