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Astrophysics

An illustration of SN2021yfj enveloped in a layer of heavy elements during its supernova explosion

A Unique Supernova ‘Dazzled’ Astronomers and Revealed the Inner Layers of Stars

Researchers observed a supernova in progress that showed the onion-like structure of elements in stars, and the explosion may belong to a class of its own

A researcher outlines how we could send a spacecraft to a nearby black hole. 

Could We Send a Superlight Spacecraft to a Theoretical Nearby Black Hole?

An astrophysicist argues that the interstellar mission would be extremely challenging but not completely unrealistic

The push and pull between the Earth and its moon impacts our planet's rotation.

Today Will Likely Be Shorter Than Usual, and It Will Happen Again in August. Here’s Why

Because of the moon’s position, Earth is rotating just over a millisecond faster than usual on a few days this summer

Researchers announced they have discovered the most massive black hole merger by detecting gravitational waves.

Physicists Detect the Most Massive Black Hole Merger Ever Observed by Studying Gravitational Waves

A short-lived ripple in space-time revealed that two black holes merged into a giant black hole with the mass of 225 suns

An illustration of a red giant star and a white dwarf orbiting each other in a recurrent nova explosion.

Rare Appearance of Two Novas at Once Illuminates the Southern Sky. Here’s How to Get a Chance to See It

The “new stars” are best seen from the Southern Hemisphere, but people have spotted them from the United States by looking near the southern horizon

NASA's ANITA experiment is lifted above Antarctica by a balloon and seeks to detect radio pulses connected to neutrinos.

Mysterious Radio Pulses Found in Antarctica Seem to Defy Physics, and Researchers Are Trying to Trace Their Origins

Strange signals detected by a NASA instrument more than a decade ago have continued to confound scientists, but a new paper rules out cosmic neutrinos as a source

This image of the the Trifid nebula (top) and the Lagoon nebula (bottom) was put together from 678 separate images taken over seven hours of observations.

See the First Breathtaking Images Captured by the Powerful New Telescope at the Rubin Observatory

Featuring never-before-seen views of galaxies and more than 2,100 newly discovered asteroids, the observations are only a taste of what to expect from the telescope’s upcoming decade-long survey

Water may have arisen as early as 100 million years after the universe began.

Did Water Form in the Earliest Years of the Universe?

A recent study suggests huge volumes of the molecule emerged during the cosmic dawn

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

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

An artist's concept of K2-18b, the exoplanet at the center of the debate

A New Analysis Raises Doubts About Potential Hints of Life Recently Detected on a Distant Exoplanet

Astronomers published evidence of possible biosignatures on the planet K2-18b earlier this month, but another look at the data suggests the finding could be statistical noise

An artist’s impression of ten hot planets similar to Jupiter outside our solar system that scientists have detected. Creative liberties were taken for the colors of the planets, which are currently unknown. The exception is the top-right one, which is known to sport a blue exterior.

From Worlds That Look Like Cotton Candy to Others Covered in Volcanoes, These Are the Strangest and Most Captivating Exoplanets

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most definitely don’t

JADES-GS-z14-0 is the most distant known galaxy, dating to less than 300 million years after the Big Bang. Scientists were surprised to find oxygen there.

Scientists Detect ‘Unexpected’ Oxygen in the Most Distant Galaxy Ever Found, Defying Ideas About the Early Universe

The findings suggest galaxies formed much more quickly than astronomers assumed

DESI, seen here beneath star trails, aims to create a 3D map of the universe.

Mysterious Dark Energy Might Be Weakening—and That Could Upend Predictions About the End of the Universe

Astronomers thought dark energy was a constant. But now, findings from the Dark Energy Spectroscopic Instrument provide even more evidence that it may be fluctuating

A mosaic of galaxies captured by Euclid as part of its first observations of the deep field areas

The First Big Data Drop From the Euclid Space Telescope Unlocks a ‘Treasure Trove’ of Insights on the Universe’s Mysteries

The European Space Agency’s “dark universe detective” discovered millions of new galaxies and offers potential clues about dark matter

Cecelia Payne-Gaposchkin at Harvard College Observatory

A Century Ago, Pioneering Astrophysicist Cecilia Payne-Gaposchkin Showed Us What Stars Are Made Of

The trailblazing Harvard scientist, who documented the dominance of hydrogen and helium in stars, is still inspiring researchers today

The Large Magellanic Cloud, photographed here by the Hubble Space Telescope, is about 160,000 light-years from Earth.

Astronomers Discover Evidence of a Stealthy Supermassive Black Hole Hiding Right ‘Under Our Noses’

The Large Magellanic Cloud is one of the most well-studied galaxies, but new findings suggest it might have been holding a giant secret

This is the first image of Sagittarius A*, the supermassive black hole at the center of our galaxy, captured by the Event Horizon Telescope (EHT) and released in 2022.

This Comprehensive Guide Will Answer the Questions You Have About Black Holes—and Spark Some New Ones

In a new book release, two scientists combine forces to explain the discoveries, developments and theories made in the realm of the densest objects in space

An artist's illustration portrays the supermassive black hole at the center of the Milky Way, known as Sagittarius A*.

James Webb Telescope Reveals a Dazzling Light Show From the Milky Way’s Black Hole

Unpredictable bursts of light are pulsing from the debris surrounding Sagittarius A*, offering new insights into the mysterious behavior of the most massive object in our galaxy

A digital optical module of the K3MNeT collaboration telescope, which identified the high-energy neutrino.

A Record-Breaking ‘Ghost Particle’ From Outer Space Made a Splash of Light in the Mediterranean

The neutrino was 30 times more energetic than any other previously observed particle of its kind. Scientists still don’t know exactly where it came from

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