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Astrophysics

An artist's impression of the CD-35 2722 star system

Is This Giant Celestial Body a Moon, a Planet or Something in Between? The Strange Object Calls Astronomical Labels Into Question

The newly found object, estimated to be roughly as massive as Jupiter, orbits a brown dwarf—a “failed star”—which in turn circles a small star. For now, researchers are calling the puzzling body an “exosatellite”

The upper stage of a SpaceX Falcon 9 rocket is estimated to hit the moon on August 5.

A SpaceX Rocket Part Is Expected to Smack Into the Moon in August, Highlighting the Growing Problem of Space Junk

The unintended event also creates an opportunity for scientists and skywatchers to witness lunar impact dynamics in real time, although the debris will hit a sunlit portion of the moon from the perspective of Earth, making it hard to see

An artistic rendering of LHS 1140 b and its host star, with another smaller exoplanet orbiting nearby.

Could Life Exist on This Nearby World? In a First, Astronomers Find an Atmosphere on an Earth-Like Exoplanet in the Habitable Zone

While the celestial body seems to host three features that could make a livable environment—an atmosphere, a rocky composition and a temperature that could allow liquid water to sit on the surface—researchers have not currently detected any residents

The sugar was detected near the center of our Milky Way galaxy, which shines brightly with stars in this artificially colored image.

In a First, Astronomers Find Sugar in the Space Between Stars, Providing New Clues About the Origins of Life on Earth

Sugars are crucial components of RNA and DNA, the basis of all known organisms alive today. In a new study, the sugar erythrulose was detected in a gas- and dust-filled cloud near the center of our Milky Way galaxy

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This Giant Planet May Have Survived the Death of Its Star. The James Webb Space Telescope Just Found Its Atmosphere

New observations of WD 1856 b, a gas giant closely orbiting a white dwarf, offer a preview of what could happen to Jupiter and Saturn after the sun dies in about five billion years.

Image of the constellation Lupus taken by the LSST camera

‘The Greatest Cosmic Movie Ever Made’: The World’s Largest Digital Camera Begins a Historic, Decade-Long Survey of the Night Sky

After a year of testing, the Vera C. Rubin Observatory in Chile has started capturing data as part of the much-anticipated Legacy Survey of Space and Time

The new image of the center of the Milky Way, which is packed with stars

See the Most Detailed Photo of the Milky Way’s Heart Ever Taken in Visible Light, Which Will Help Astronomers Hunt for Exoplanets

The European Space Agency’s Euclid telescope was built to study dark matter and dark energy, but for one day last year, it captured the densely packed stars brightening the center of our galaxy

An image of interstellar comet 3I/ATLAS captured by a telescope in Hawaii

Interstellar Comet 3I/ATLAS Might Be the Oldest Object Ever Seen in Our Solar System, a Study Suggests

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar system

Crystal containing thorium-229 atoms used in the European team's clock

The World’s First Nuclear Clocks Are Ticking, Opening a New Way to Investigate Dark Matter and Other Mysteries of Physics

Two independent teams of scientists have created the first functional clocks that can keep ultraprecise time using the nuclei of a radioactive element

Illustration of NASA’s Neil Gehrels Swift Observatory

This Week, NASA Will Launch a First-of-Its-Kind Mission to Save a Space Telescope That Has Observed the Sky for Nearly 22 Years

In 2024, researchers realized that the Neil Gehrels Swift Observatory was falling from its orbit faster than expected. Now, a robotic spacecraft called LINK aims to give the satellite a boost

Astronomers used galaxy cluster MACS J0416 (background), as a magnifying glass to view the extremely faint galaxy LAP1-B (inset), which is visualized here based on the James Webb Space Telescope's infrared data.

Astronomers Discovered a ‘Cosmic Fossil’ in the Making—the Most Chemically Primitive Galaxy Seen Yet—by Peering Back to the Edge of Time

The James Webb Space Telescope observed 13-billion-year-old light, using a closer galactic cluster like a magnifying glass. The work helps experts understand the universe’s earliest stars and mysterious ultra-faint dwarf galaxies

The southern lights curve above the Earth as the ISS orbited above the Indian Ocean southwest of Perth, Australia.

See a Stunning View of the Southern Lights Dancing Across the Earth Captured by a NASA Astronaut

Jessica Meir, commander of NASA’s SpaceX Crew-12 mission, shared photos and videos of a green aurora she shot while sheltering in a capsule outside the International Space Station

Composite image of evidence for wind blowing away from Sagittarius A*, with the black hole shown as a white dot in the center, cold gas in orange and X-ray data in blue. 

The Supermassive Black Hole at the Heart of Our Galaxy Seems to Be Blowing Wind—Just as Scientists Long Theorized

Scientists have been searching for evidence of this breeze since the 1970s. They’ve seen intense wind from other black holes, but they’ve struggled to observe the one at the Milky Way’s center

An artistic rendition of the MAVEN spacecraft orbiting Mars

NASA Officially Ends the MAVEN Mission Months After Losing Contact With the Mars Orbiter

The agency last heard from the spacecraft on December 6. Recovered fragmentary data suggest that MAVEN was spinning unexpectedly, hinting at a change in its trajectory and draining its batteries

People across New England and eastern Canada witnessed an ultrabright meteor explode over the weekend.

A Bright Meteor Lit Up the New England Sky Before Exploding With a Loud Boom—and Its Pieces May Have Landed in Cape Cod Bay

People reported seeing the glowing space rock or hearing or feeling its breakup from Delaware to Montreal. Experts estimate that it was about three feet wide and traveling at 75,000 miles per hour when it broke apart

Illustration of a time sequence as the celestial body moves in front of a distant star

This Tiny Celestial Body Past Pluto Shouldn’t Have an Atmosphere—but Astronomers Say They May Have Detected One

Worlds this small and distant are thought to be too cold and have too little surface gravity to hold onto gases. But the findings suggest that icy, rocky objects in the solar system’s outer reaches are more dynamic than we thought

Pluto was considered the solar system's ninth planet for more than 70 years.

Could Pluto Once Again Be Considered a Planet? New Remarks From NASA’s Administrator Highlight an Enduring Debate Among Scientists

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for being a planet, putting Pluto into the new category of dwarf planet

Comet 3I/ATLAS has much more "heavy" water than comets that formed in the solar system, according to a new study.

Interstellar Comet 3I/ATLAS Came From an Extremely Cold, Lonely Region of the Milky Way Galaxy, New Research Suggests

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of “heavy” water. That hints it grew up in a frigid planetary system, possibly before its home star formed

A Lyrid meteor photographed in Yunnan Province, China, on April 24, 2022

Look Up This Week to See the Peak of the Lyrid Meteor Shower. Humans Have Documented This Dazzling Annual Display for 2,700 Years

During the wee hours of April 22, moonset times will give stargazers in much of the United States a solid stretch of dark sky before sunrise

A red aurora over Engaru, Hokkaido, Japan, similar to those documented throughout history, which helped the researchers reconstruct past solar activity

Medieval Writings and Tree Rings Helped Researchers Track a Solar Storm From 800 Years Ago and Reconstruct Past Solar Cycles

Diary entries by the Japanese poet Fujiwara no Teika, along with other historical sources from across Asia and Europe, played pivotal roles in a new study

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