Astronomers

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

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

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

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

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

The northern lights appear near Saskatoon in Saskatchewan, Canada, on May 11, 2024.

Missed the Auroras in May? Here’s How to See Them Next Time

Three veteran aurora chasers and a NASA scientist share everything you need to know to check these dazzling displays off your bucket list

An illustration of our solar system's planets in a line. This week, six planets appeared to be in a line from Earth's perspective, but they did not acutally align in space.

Missed the 'Parade of Planets'? These Upcoming Alignments Will Likely Be Better, Anyway

Astronomers tempered expectations of the celestial event this week, pointing to others in the near future as more exciting opportunities for sky watchers

A bright green fireball is captured on camera over Cáceres, Spain, by the European Space Agancy. Officials say the object was a comet and likely broke up over the Atlantic Ocean.

Watch a Blue-Green Comet Illuminate Skies Over Spain and Portugal

The colorful fireball mesmerized onlookers—and its unexpected appearance surprised astronomers who are hoping to better predict when space rocks enter Earth's atmosphere

The Eta Aquarids appear to originate from a bright star in the constellation Aquarius.

How to Watch the Dazzling Eta Aquarid Meteor Shower, Bringing an Unusual 'Outburst' to Skies This Weekend

This year's spectacle will be more impressive than usual, as the Earth passes through a concentrated clump of 3,000-year-old comet debris

Stonehenge was constructed in stages beginning about 5,000 years ago.

Were Stonehenge's Builders Guided by the Moon?

Researchers are studying the monument's connection to a celestial event that occurs every 18.6 years

In an artist's rendering, a red giant star and white dwarf star circle each other. Material ejected from the red giant gathers and heats in the white dwarf, catalyzing a bright explosion.

A Rare Nova Explosion Will Soon Bring a 'New Star' to the Night Sky—How to Catch a Glimpse

In an event that occurs only once every 80 years, a distant remnant of a star will grow much brighter, briefly becoming visible to Earth

A close-up of the Dragon's Egg Nebula, with two mismatched stars inside.

A Stellar Collision Birthed the 'Dragon's Egg' Nebula, a Puzzling Structure in the Milky Way

The colorful cloud of gas and dust has a violent origin—and this explains the unusual traits of two massive stars within it, astronomers say

This false-colored image of Mercury reflects the varying age and mineral composition of the surface.

The Seven Most Amazing Discoveries We’ve Made by Exploring Mercury

Only two robotic missions have made it to the Swift Planet, but they were crucial for upending many false assumptions of that sun-scorched world

Tens of millions of people watched Monday's total solar eclipse.

When Are the Next Solar Eclipses? 2026 Promises Totality in Europe, While Much of America Has a Decades-Long Wait

The next total solar eclipse visible from the contiguous U.S. won’t take place until August 23, 2044—but eclipse chasers will have other opportunities to experience totality before that

Furnished with permission from the British to cross into their waters, Samuel Williams set sail for Penobscot Bay in south-central Maine, which he thought was within a solar eclipse's path of totality.

The Eclipse Chaser Who Led an Expedition Behind Enemy Lines During the Revolutionary War

In 1780, astronomer Samuel Williams journeyed to British-controlled territory to view a total solar eclipse

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