Sun

One side of the device was used to tell the date of Easter Sunday.

This Device Might Be England's Oldest Dated Scientific Instrument

The 712-year-old artifact is a horary quadrant, a medieval tool used to tell time based on the position of the sun

The northern lights cast an eerie glow upon an abandoned, wrecked airplane.

These 15 Photos Capture the Beauty of the Northern Lights

Spiking solar activity could mean more chances to see the awesome aurora borealis

In 1958, dozens of red-breasted flycatchers, like the one pictured here, flew off course and visited the United Kingdom.

One Reason Migrating Birds Get Lost Is Out of This World

Solar energy can alter the Earth’s magnetic field and likely lead the animals astray

An annular solar eclipse, captured by the solar optical telescope Hinode as the moon passed between it and the sun.

How to Watch the Annular 'Ring of Fire' Solar Eclipse on Saturday

A partial eclipse will be visible from all of the continental U.S., but only those in Oregon and the Southwest will have a chance to see the glowing ring

Warming spurred by Earth's next supercontinent could lead to widespread desert conditions, a new modeling study suggests. Pictured is the Tengger Desert in Inner Mongolia, an autonomous region of China.

Earth's Next Supercontinent Could Wipe Out Mammals in 250 Million Years

Termed “Pangea Ultima,” the predicted future landmass might be extremely hot, plagued by volcanoes and largely inhospitable, per a new modeling study

Onlookers watch as a rocket carrying the Aditya-L1 spacecraft launches. The mission will study the sun's outer layers and the influence of solar activity on the solar system.

India Launches Mission to Study the Sun and Space Weather

The Aditya-L1 spacecraft will examine the star's outer layers and aim to shed light on its violent—and potentially damaging—storms

Neptune, captured by the Voyager 2 spacecraft. A new study finds a link between the planet's cloud coverage and solar activity.

Neptune's Clouds Have Disappeared, and the Sun Might Be Responsible

Scientists have linked shifts in the distant planet's cloud coverage to the ever-oscillating solar cycle, which is due to peak soon

The "cosmic question mark" in an image taken by the James Webb Space Telescope

What Is This 'Cosmic Question Mark' Captured by the James Webb Space Telescope?

Astronomers say the distinct, punctuation-like shape could be a result of galaxies merging

An image of the Ring Nebula captured by the James Webb Space Telescope. The interior of the ring is filled with hot gas and the ring itself is a complex structure made up of thousands of dense clumps of hydrogen gas.

James Webb Telescope Captures the Glowing Ring Nebula in Magnificent Detail

The colorful ring, located some 2,600 light-years away from Earth, is made from the remnants of a dying star

Holland America Line is hosting two solar eclipse cruises, including on aboard the MS Koningsdam.

You Can Watch the 2024 Total Solar Eclipse From Aboard These Cruise Ships

Several cruise lines are offering special sailings for the rare celestial spectacle on April 8, 2024

Focused on the waves, whether real or decorative, a flip-flop-wearing family—and their orca inflatable—heads to the beach.

Get a Dose of Sun, Sand and Sea With These 15 Scenes From the Beach

These highlights from the Smithsonian Magazine Photo Contest are sure to remind you of everything you love about the shore

RCW58, a Wolf-Rayet bubble nebula, is made of ejected material from the star WR 40, which shines at the center of the image.

See Ten Dazzling Space Images From the Astronomy Photographer of the Year Awards

From comets to nebulas to the Milky Way, the shots shortlisted in the annual competition capture the beauty of the cosmos from Earth

The northern lights as seen through a layer of wildfire smoke in Banff National Park in Alberta, Canada, in September 2022.

Aurora Borealis Could Dazzle the Northern U.S. This Week

The current forecast from the University of Alaska, Fairbanks, says the glowing display could be visible as far as Madison, Wisconsin

Crowds gather for the summer solstice at Stonehenge in Wiltshire, England.

Nine Ways People Celebrate the Summer Solstice Around the World

Across the Northern Hemisphere, worshippers of the longest day of the year build bonfires, plunge into the ocean and visit prehistoric monuments

Dusty debris discs surround the young star Fomalhaut. The two innermost asteroid belts had never been seen before Webb revealed them.

James Webb Telescope Reveals Asteroid Belts Around Nearby Young Star

The findings suggest the star Fomalhaut may have orbiting planets hidden among its rings of debris

During the 2017 solar eclipse, the path of totality was just 71 miles wide. In 2024, it's expected to be 125 miles wide.

Cleveland Is Giving Away a Free Trip to See the 2024 Solar Eclipse

The city is within the 125-mile-wide path of totality and will experience a total eclipse for nearly four minutes on April 8, 2024

Aurora borealis captured in northern Minnesota on April 23.

Widespread Auroras That Lit Skies This Week Are Getting More Common

The stunning colors that dazzled viewers on Sunday will appear again as the sun's activity builds to a peak in 2025

The hybrid eclipse will appear to viewers as a total solar eclipse, annular solar eclipse or partial solar eclipse depending on their vantage point.

How to Watch the Rare Hybrid Solar Eclipse From Your Home

This spectacle in the South Pacific will be visible in online livestreams on Wednesday. It is the last hybrid solar eclipse until 2031

It is expected that about 18 meteors per hour will light up the sky at the peak of the Lyrid meteor shower this year.

How to Watch the Spectacular Lyrid Meteor Shower

One of the oldest recorded annual showers, the Lyrids will peak on April 22

The total solar eclipse of 2017 as seen from Monmouth, Oregon

Everything You Need to Know About the 2024 Total Solar Eclipse

A veteran eclipse chaser explains how to get ready for one of the planet’s biggest celestial events

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