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Nobel laureate George Smoot, who researched the universe’s origins at UC Berkeley, dies at 80

Nobel laureate Dr. George Smoot, who conducted groundbreaking research into the origins of the universe during a long career at the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, has died, the school said. He was 80.

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Neural network method can automatically identify rare heartbeat stars

Researchers from the Yunnan Observatories of the Chinese Academy of Sciences (CAS) have unveiled a neural network-based automated method for identifying heartbeat stars—a rare type of binary star system. Their findings are published in The Astronomical Journal.

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Beneath the ice: Spring sunlight triggers photoinhibition and recovery in marimo

The marimo (Aegagropila brownii), a nationally designated Special Natural Monument of Japan, inhabits Lake Akan in Hokkaido, where environmental conditions fluctuate drastically with the seasons. Of particular concern is the period immediately after ice melt in early spring, when low water temperatures coincide with strong sunlight, posing a risk of severe damage to photosynthetic activity. […]

Simulations show Saturn’s moon Enceladus shoots less ice into space than previous estimates

In the 17th century, astronomers Christiaan Huygens and Giovanni Cassini trained their telescopes on Saturn and uncovered a startling truth: the planet’s luminous bands were not solid appendages, but vast, separate rings composed of countless nested arcs.

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Geological evidence points to ancient ocean in Mars’ northern hemisphere

Billions of years ago, water flowed across Mars. Most scientists agree the red planet had rivers. But did those rivers flow into an ocean? New research from the University of Arkansas found strong evidence in Mars’ geology of an ocean in the planet’s northern hemisphere.

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Gaia solves mystery of tumbling asteroids and finds new way to probe their interiors

Whether an asteroid is spinning neatly on its axis or tumbling chaotically, and how fast it is doing so, has been shown to be dependent on how frequently it has experienced collisions. The findings, presented at the recent EPSC-DPS2025 Joint Meeting in Helsinki, are based on data from the European Space Agency’s Gaia mission and […]

Constraining Proxima b’s atmosphere, orbit and albedo with RISTRETTO

What new methods can be employed to help astronomers distinguish the light from an exoplanet and its host star so the former’s atmosphere can be better explored? This is what a recent study accepted to Astronomy & Astrophysics and currently available on the arXiv preprint server hopes to address as an international team of researchers […]

Sharper than ever: New algorithm brings the stars into greater focus

Johns Hopkins applied mathematicians and astronomers have developed a new method to render images from ground-based telescopes as clear as those taken from space, a process that stands to expand the benefits of Earth-based instruments.

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Scientists discover 63 new young asteroid families—more than doubling the previous number

Young asteroids—which formed much later than those that were created during the formation of our solar system—are typically created when larger asteroids, planetesimals, or comets collide and break up into smaller pieces. These smaller pieces form “asteroid families” that share certain properties, like their semimajor axis, eccentricity, and inclination—all of which describe their orbital paths. […]

Moon-forming disk around massive planet offers insight into how the moons of gas giants might have formed

The NASA/ESA/CSA James Webb Space Telescope has provided the first direct measurements of the chemical and physical properties of a potential moon-forming disk encircling a large exoplanet. The carbon-rich disk surrounding the world called CT Cha B, which is located 625 light years away from Earth, is a possible construction yard for moons, although no […]

Mars’s atmospheric ‘mille-feuille’—high-resolution images capture fine layers of clouds and dust

Slices from the edge of Mars reveal a layered atmosphere of delicate complexity. A European spacecraft has captured a luminous mille-feuille of dust enveloping the red planet in unprecedented detail.

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Hubble captures puzzling galaxy with gas-free center and dusty ring

This NASA/ESA Hubble Space Telescope image features a galaxy that’s hard to categorize. The galaxy in question is NGC 2775, which lies 67 million light-years away in the constellation Cancer (the Crab). NGC 2775 sports a smooth, featureless center that is devoid of gas, resembling an elliptical galaxy. It also has a dusty ring with […]

Uranian moon Ariel’s surface features point to a past ocean over 100 miles deep

Growing evidence suggests that a subsurface ocean lurks beneath the icy surface of Uranus’ moon Ariel, but new research, published in Icarus, characterizes the possible evolution of this ocean, and found that it may have once been over 100 miles (170 kilometers) deep. For perspective, the Pacific Ocean averages 2.5 miles (4 kilometers) deep.

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The asteroid belt’s slow disappearing act

The asteroid belt is found orbiting between Mars and Jupiter and is a vast collection of rocks that is thought to be a planet that never formed. When our solar system formed 4.6 billion years ago, the material in this region should have coalesced into a planet; however, Jupiter’s gravitational influence prevented this from happening, […]

New instrument at SOAR achieves first light with observations of remarkable binary star system

The SOAR Telescope, located on Cerro Pachón in Chile, has received a major upgrade with the installation of the SOAR Telescope Echelle Spectrograph (STELES). The long-awaited instrument achieved first light in August with observations of the binary star system Eta Carinae, along with 13 other targets. SOAR is part of U.S. National Science Foundation Cerro […]