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Physics

NASA’s X-59 quiet supersonic research aircraft

In a First, NASA’s Experimental X-59 Plane Flew Faster Than the Speed of Sound, Setting the Stage for ‘Quiet’ Supersonic Aircraft

The United States banned supersonic flights over its land in 1973 due to their ear-splitting sonic booms. Experts are building a plane that should travel at those speeds but create only gentle thumps

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

Fire salamanders are among the most-studied amphibians in Europe, yet until now, no one realized they are biofluorescent.

Scientists Have Been Studying Fire Salamanders for More Than 250 Years. They Just Discovered That the Creatures Glow Under UV Light

Fire salamanders—one of Europe’s most well-researched amphibians—are biofluorescent, which means they can absorb light from an external source at one wavelength, then re-emit it at another

Unlike metals such as iron and copper, gold doesn't easily tarnish. 

Glittering Gold Can Stay Shiny for Centuries. Scientists Say They’ve Figured Out Why the Precious Metal Is So Resistant to Tarnishing

When the metal is split, the atoms on its surface rearrange themselves into a very stable pattern that doesn’t easily react with oxygen in the air, a study suggests

Left to right: Ethiopia's Yomif Kejelcha placed second, Kenya's Sabastian Sawe placed first, and Uganda's Jacob Kiplimo placed third

Two Athletes Smashed a Marathon Milestone, Running 26.2 Miles in Under Two Hours. Here’s the Science Behind Their Achievements

An intense training regimen, good weather conditions, physiology and lightweight shoes probably played a role in their astounding performances during the London Marathon on Sunday

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

A violent, swirling storm on Jupiter captured by NASA's Juno spacecraft

Lightning Strikes on Jupiter Are 100 Times as Powerful as Those on Earth, a New Study Suggests

Scientists finally have a clearer picture of the gas giant’s intense storms

An artist's concept of comet 41P as it approached the sun, turning some of its ice into gaseous jets

In a First, an Astronomer May Have Witnessed a Comet Stop Its Spin—Then Reverse Its Rotation

Archival images snapped by the Hubble Space Telescope revealed the unusual event

Bruce Jayne, a biologist at the University of Cincinnati, co-authored the new paper, which examined the locomotive abilities of three brown tree snakes (like the one pictured here) and a scrub python.

How Do Snakes ‘Stand’ Upright Nearly Stick-Straight? New Research Points to How They Pull Off the Gravity-Defying Feat

These clever creatures seem to concentrate their muscle activity near their bases, which helps them cross gaps between tree branches in the wild

Stars in the ancient dwarf galaxy Pictor II

Astronomers Discover a Rare Primitive Star That Provides a Chemical Snapshot of the Early Universe

PicII-503 is likely a second-generation star, born from the remnants of the very first stars, according to a new study

A green fireball meteor flew above central California on the night of March 22.

Two Green ‘Fireballs’ Streaked Across the West Coast Sky, Some of the Latest in a String of Dazzling Meteors Above the U.S.

Some of the space rocks exploded, causing loud booms, and a piece of one may have crashed into a house

The antimatter went on a roughly 30-minute road trip.

In a First, the World’s Most Expensive and Volatile Substance—Antimatter—Traveled by Truck

The work paves the way for longer-distance transport of the rare material so scientists can study it at other facilities

Illustration of L98-59d (lower left) orbiting its host star, a red dwarf

Scientists May Have Discovered a New Type of Planet Beyond the Solar System. The Catch? It Smells Like Rotten Eggs

L98-59d seems to be a molten planet with an atmosphere full of hydrogen sulfide

3D rendering of an Eciton hamatum subsoldier ant

These Stunningly Detailed 3D Images of Ants Showcase the Remarkable Diversity Across Their Many Species

Scientists used a game-changing technique to scan about 2,200 preserved specimens in just one week to create the Antscan database

The researchers used sound waves to levitate tiny glass spheres as part of their study. 

Scientists Make a Major Breakthrough in Solving a Hair-Raising Mystery About Static Electricity

The findings can help explain the physics behind phenomena like volcanic lightning

An 1894 film of a falling cat

How Do Cats Always Land on Their Feet? Researchers Examined Feline Spines to Find Out

Scientists determined that the upper part of a cat’s spine is more flexible than the lower part

An artist's conception of a magnetar surrounded by a wobbly accretion disk

Astronomers Witnessed the Birth of a Magnetar for the First Time. It Explains the Mysterious Flickering of an Ultrabright Supernova

New research suggests that the highly magnetized remnants of stars are responsible for powering some of the universe’s most brilliant supernova explosions

The Van Allen Probes spent seven years studying two donut-shaped rings of radiation around the Earth.

A 1,300-Pound Spacecraft Might Be Plummeting Through Our Atmosphere Right Now

The debris poses minimal risk of harming anyone

The physics behind shoe squeaks is surprisingly complex. 

Why Do Basketball Players’ Shoes Squeak on the Court? Here’s the Physics Behind the Iconic, High-Pitched Sounds

The screeches come from wave-like deformations of sneakers’ flexible soles

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