The five dwarf planets recognized by the International Astronomical Union are Pluto, Ceres, Eris, Haumea and Makemake—and these are pictured with 2017 OF201 in a telescope image.

Astronomers Discover a Possible Dwarf Planet Far Beyond Neptune, Where There Should Have Only Been Empty Space

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region thought to be largely devoid of objects

Enceladus (center) orbits Saturn in this 2007 image captured by NASA’s Cassini spacecraft.

Should Scientists Inject Saturn’s Moon Enceladus With Life?

A new study proposes that seeding the orb’s underground ocean with microbes might help us learn how to make other worlds habitable

NASA’s Solar Dynamics Observatory (SDO) captured this image of extreme solar activity on May 10, 2024.

The U.S. Ran Its First Space Weather Preparedness Drill—Here’s How It Went

Ironically, the exercise last May was interrupted by a real scenario, when Earth was hit by the strongest solar storm in two decades

An ancient star map (not the document analyzed in the new research) unearthed in Dunhuang, China, in the seventh century C.E.

New Research

These Scientists Say They’ve Identified the Oldest Known Star Chart in the World

A new preprint suggests that an ancient Chinese star catalog dates to 355 B.C.E. But other researchers aren’t convinced, arguing that the original coordinates are misaligned by one degree

An artistic rendering of one of the Voyager probes.

NASA Engineers Revive Long-Dormant Thrusters on Voyager 1, the Farthest Spacecraft From Earth, in a ‘Miracle Save’

In the nick of time, NASA teams addressed clogging issues in the probe’s backup roll thrusters, before the only antenna capable of sending commands to it went offline

The sun launched a powerful solar flare on May 14, 2025, captured here by NASA’s Solar Dynamics Observatory.

Sun Launches Its Strongest Solar Flare of the Year So Far, Causing Radio Blackouts Around the World

The new sunspot responsible for this powerful blast is rotating into view, which could bring more solar activity—and potential aurora-causing coronal mass ejections—to Earth in the coming days

The first image in visible light of green auroras on Mars (left), compared to the night sky of Mars without auroras.

See the First Visible Auroras Captured on Mars, Glowing a Hazy Green Above the Planet

Scientists directed NASA’s Perseverance rover to take an image of the Martian sky after a solar storm in hopes that an aurora would show up

These observations of Jupiter’s auroras (shown on the left of the above image) were captured with NASA's James Webb Space Telescope’s Near-Infrared Camera on December 25, 2023.

Check Out Jupiter’s Stunning Auroras, Which Are Hundreds of Times Brighter Than Earth’s, in the James Webb Telescope’s Latest Images

The infrared views, captured in 2023, shed light on the giant planet’s atmosphere and magnetosphere—but they also reveal something unexpected

An artistic rendering of a magnetar—or highly magnetized neutron star—losing material into space. The magnetic field lines, shown in green, direct the movement of charged material.

Astrophysicists Track Down the Mysterious Cosmic Origins of Gold and Other Heavy Metals in Our Galaxy

Researchers suggest powerful bursts from magnetars—collapsed stars with strong magnetic fields—may have contributed up to 10 percent of all elements heavier than iron in the Milky Way

A view of the sky during the Eta Aquariid meteor shower over the Fred C. Babcock/Cecil M. Webb Wildlife Management Area in Florida

How to Watch the Peak of the Spectacular Eta Aquariid Meteor Shower

The shower will peak during pre-dawn hours in early May, as fast-moving meteors trail across Earth’s atmosphere, thanks to debris left behind by Halley’s Comet

An artist's rendition of what Eos would look like from Earth if it were visible to the naked eye.

Astronomers Discover a Giant, Glowing Molecular Cloud Hidden in Earth’s Cosmic Neighborhood

The cloud, named Eos after the Greek goddess of dawn, had eluded researchers because it contains very little carbon monoxide

Workers prepare Venera 4, a Soviet space probe, for its flight to Venus' atmosphere in 1967.

A Soviet Spacecraft Is About to Crash Back to Earth After Being Stuck in Orbit for 53 Years

The Cosmos 482 lander was intended to reach Venus, but it has instead been circling Earth since 1972

An artistic rendering of an exoplanet in a tight orbit, followed by a dusty, comet-like tail of debris.

Astronomers Discover a Doomed Exoplanet That’s Crumbling Away and Leaving Behind a Comet-Like Tail

The planet orbits its host star in just 30.5 hours, losing a mass of material roughly equal to Mount Everest each time

The commemorative watch was given to Armstrong at a gala dinner in Houston in November 1969.

A Gold Watch That Belonged to Astronaut Neil Armstrong Sold for $2.1 Million at Auction

The commemorative timepiece is similar to the one that Armstrong and other NASA astronauts wore in space

The asteroid Donaldjohanson, captured by NASA's Lucy spacecraft on Sunday. 

NASA’s Lucy Spacecraft Just Flew by a Strange, Peanut-Shaped Asteroid. See the New Images From the Approach

The close-up views of asteroid Donaldjohanson are a preview of what’s to come for Lucy on its 12-year quest to study Jupiter’s Trojan asteroids

A reconstruction of a Neanderthal man in the Natural History Museum, Vienna. A new study suggests Neanderthals could not adapt to a period of increased radiation as well as early modern humans did.

Sunscreen, Clothing and Caves May Have Given Modern Humans an Edge Over Neanderthals When Earth’s Magnetic Field Wandered

A new study suggests the extinction of Neanderthals nearly coincided with a shift in Earth’s magnetic field that let more radiation reach the ground. Our species might have adapted more easily

The Lyrid meteor shower coincided with a nearly full moon at its peak in 2024, seen here at Joshua Tree National Park. This year, conditions will be more favorable.

How to Watch the Lyrid Meteor Shower at Its Dazzling Peak

The annual spectacle, which is happening now, will last until around April 25—but the best viewing will fall between the 21 and 22

A rendering of a Sunbird rocket detaching from its station to dock onto an approaching spacecraft.

Fusion Rockets Could Theoretically Cut Our Travel Time to Mars in Half. This U.K. Startup Wants to Give It a Try

The company’s ambitious new Sunbird design aims to harness nuclear fusion in space, despite the fact that commercializing such energy on Earth remains a faraway dream

An artist's impression of K2-18b and its distant host star, visualized as if the planet had water and a hydrogen-rich atmosphere.

Chemical Hints on a Distant Planet Offer ‘Strongest Evidence Yet’ for Life Outside Our Solar System, Astronomers Say

The James Webb Space Telescope spotted possible signatures for life in an exoplanet’s atmosphere. Still, researchers caution it’s far too early to call the findings definitive

The far side of the moon—seen here, captured by NASA's Lunar Reconnaissance Orbiter—could be much drier than expected.

The Moon’s Far Side Is Strangely Dry—Lunar Samples Suggest It’s Much More Parched Than the Side That Faces Earth

Chinese researchers analyzed the first-ever soil samples returned from the far side of the moon, but further samples will be needed to verify their findings

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