https://phys.org/space-news/ en-us The latest science news on astronomy, astrobiology, and space exploration from Phys.org. Our sun is capable of storms far bigger than we've ever recorded. Studying the world's oldest trees suggests we could soon be due one of these gargantuan events. https://phys.org/news/2026-08-ancient-trees-enormous-solar-storm.html Planetary Sciences Mon, 17 Aug 2026 14:00:06 EDT news706186321 In two separate papers published in Physical Review Letters, researchers investigated the nuclear reactions that take place inside supernovae and X-ray bursts—two of the universe's most powerful explosions. Together, the findings will help scientists build more accurate models of how stars explode and how newly formed elements are produced. https://phys.org/news/2026-08-stellar-explosions-focus-nuclear-reaction.html Astronomy Mon, 17 Aug 2026 13:00:03 EDT news706183921 It's nearly 170 million years old. It's more than 2.5 times the size of Earth. And it's the first exoplanet discovered and cataloged by researchers with the Wisconsin Center for Origins Research (WiCOR). https://phys.org/news/2026-08-mega-earth-gj-523b-massive.html Astronomy Mon, 17 Aug 2026 12:40:04 EDT news706181881 Astronomers have discovered the first confirmed dual active galactic nucleus in a Green Pea galaxy, revealing two supermassive black holes growing at the same time inside a compact, intensely star-forming system. X-ray observations with Chandra resolved two actively accreting black holes, while Keck spectroscopy confirmed that both belong to the same merging galaxy. The paper outlining the research was submitted to the arXiv preprint server on July 20. https://phys.org/news/2026-08-pair-supermassive-black-holes-green.html Astronomy Mon, 17 Aug 2026 11:10:01 EDT news706178042 Astronomers have discovered that the jet of a distant blazar has been gravitationally lensed by an unseen source of dark matter. Led by Silke Britzen at the Max Planck Institute for Radio Astronomy in Germany, the team's results could prove especially important for observations of cosmic neutrinos, which are likely produced in abundance alongside a broad spectrum of electromagnetic waves in blazar jets. https://phys.org/news/2026-08-dark-gravitationally-lensing-source-cosmic.html Astronomy Mon, 17 Aug 2026 08:40:08 EDT news705924819 A new paper has put hard numbers on a plan that's been rattling around the astronomy community for a while now—a California company called Reflect Orbital wants to put giant mirrors in orbit and beam sunlight down to Earth after dark. The work is published on the arXiv preprint server and has been accepted for publication in Astrophysical Journal Letters. https://phys.org/news/2026-08-brightened-night-sky.html Astronomy Mon, 17 Aug 2026 07:20:09 EDT news706165501 You may have heard the phrase "we are made of star-stuff." This statement by the astronomer Carl Sagan refers to the fact that elements heavier than hydrogen and helium were forged in the centers of the first stars. But how does this star-stuff evolve into the chemistry of rocks, plants and people? https://phys.org/news/2026-08-radio-telescopes-scientists-molecules-space.html Astronomy Sun, 16 Aug 2026 18:40:01 EDT news705925133 Japanese scientists are readying a mission to Mars' moons to retrieve samples that may unlock the origins of the solar system and life on Earth, although a rival Chinese mission aims to make it back first. https://phys.org/news/2026-08-japan-aims-moons-mars.html Planetary Sciences Sun, 16 Aug 2026 15:05:17 EDT news706111469 Astronomers have linked an X-ray flash discovered by the Einstein Probe to a known type of supernova with unusual features that point to the birth of an ultra-dense, rapidly spinning magnetar. The paper outlining this finding was published in The Astrophysical Journal Letters on July 22. https://phys.org/news/2026-08-einstein-probe-rare-ray-star.html Astronomy Sun, 16 Aug 2026 10:00:02 EDT news705922882 Astronomers at MIT and elsewhere have spotted an extremely bright red spot in the early universe. The object resembles an enormous star, roughly the size of our solar system. But it also is putting out 100 billion times more energy than any known star can physically produce. In fact, such energies are closer to what a black hole might generate. https://phys.org/news/2026-08-black-hole-star-astronomers-brand.html Astronomy Sun, 16 Aug 2026 07:00:01 EDT news705724274 NASA is planning to send three small rovers to the moon with a single instruction: Work out among yourselves how to explore a patch of ground. https://phys.org/news/2026-08-exploring-moon-require-rovers.html Space Exploration Sat, 15 Aug 2026 14:00:01 EDT news705830940 A new paper published in Physical Review Letters reveals that a leading dark matter candidate—the hypothetical "dark photon"—would not have heated the early universe as previously thought. The finding opens a vast region for experimental searches and could change the hunt for dark matter. https://phys.org/news/2026-08-early-universe-plasma-dark-photons.html Astronomy Sat, 15 Aug 2026 12:40:01 EDT news705910291 Neptune's moon and ring system stand out among the giant planets because of the strange imbalance between its one very large moon and its many tiny moons. Its largest moon, Triton, makes up more than 99% of the mass of all satellites orbiting the planet while orbiting retrograde compared with Neptune's rotation. The predominant theory is that Triton is a captured Kuiper Belt object that caused a major disruption in Neptune's early moon system. Now, a new study published in Science Advances provides spectroscopic evidence to support this theory. https://phys.org/news/2026-07-neptune-tiny-moons-story-triton.html Planetary Sciences Sat, 15 Aug 2026 11:20:01 EDT news704628891 From launchpads to low Earth orbit and beyond, space companies and their affiliates are deploying a familiar marketing tactic—with a new twist. In a space economy projected to reach US$1.8 trillion by 2035, they sell space exploration narratives by appealing to a desire to expand humankind beyond Earth—while downplaying or omitting the negative repercussions for Earth and the space environment. Welcome to the age of starwashing. https://phys.org/news/2026-08-starwashing-space-companies-greenwashing-playbook.html Space Exploration Fri, 14 Aug 2026 21:00:01 EDT news705765127 Using unique equipment installed on NASA's WB-57 aircraft flying above heavy clouds off the coast of Iceland, a Southwest Research Institute-led team successfully observed a total solar eclipse on Wednesday. The high-altitude jet followed the moon's shadow at 50,000 feet (15,000 meters) to take measurements of the solar corona in nine different wavelengths, ranging from visible to infrared light. https://phys.org/news/2026-08-airborne-observatory-views-solar-corona.html Space Exploration Fri, 14 Aug 2026 18:40:03 EDT news705938400 For astronauts in space, constipation is a well-known problem. But why this happens has long been unclear. Now, a new study from the University of Copenhagen in collaboration with NASA provides an idea of what happens in the stomach without the influence of gravity. https://phys.org/news/2026-08-constipation-common-astronauts-blood.html Space Exploration Fri, 14 Aug 2026 15:20:03 EDT news705932401 Astronomers have proposed a new explanation for the mysterious Cygnus Bubble, a vast cloud of ultra-high-energy gamma rays stretching thousands of light-years across the sky. While the bubble has generally been linked to the Cygnus X star-forming region, the new study argues that a microquasar more naturally explains its highest-energy emission. The results were published in a paper in The Astrophysical Journal Letters on July 21. https://phys.org/news/2026-08-mysterious-cygnus-microquasar-astronomers.html Astronomy Fri, 14 Aug 2026 14:20:07 EDT news705921760 A tiny UK-developed satellite, roughly the size of a small carry-on suitcase, could help answer one of the biggest questions in cosmology: What happened during the roughly 150 million years of the cosmic dark ages, before the universe's first stars appeared? https://phys.org/news/2026-08-tiny-satellite-dark-side-moon.html Astronomy Fri, 14 Aug 2026 11:00:01 EDT news705749643 Long before dark sunspots appear on the sun's surface, a new active region—where powerful solar eruptions can originate—begins showing subtle signs of its formation. Now, researchers say a new artificial intelligence model can detect those early signals and forecast the emergence of solar active regions nearly nine hours in advance on average. https://phys.org/news/2026-08-ai-hidden-solar-eruptions-hours.html Planetary Sciences Fri, 14 Aug 2026 09:00:01 EDT news705840421 Researchers have helped unravel the mystery of why certain pairs of stars pulse with regular, long-period bursts of radio waves. The particular class of objects observed comes in pairs that always include a compact dead star, called a white dwarf, locked in orbit with an M dwarf, a red star smaller than our sun. https://phys.org/news/2026-08-synchronized-star-pairs-unleash-radio.html Astronomy Thu, 13 Aug 2026 18:00:04 EDT news705846361 What do you do when the observation you need comes around once a year? Well, preparation is key, but this is the awkward truth about finding another Earth. When a planet crosses the face of its star, a sliver of starlight passes through its atmosphere on the way to us, and the gases there absorb their own particular colors. Read the spectrum carefully and you can list what the air is made of: oxygen, ozone and water vapor, the things that would make you sit up. https://phys.org/news/2026-08-telescope-array-earth-exoplanet-atmosphere.html Astronomy Thu, 13 Aug 2026 17:40:01 EDT news705854101 For decades, astronomers lumped brown dwarfs into a single category defined by mass alone—too big to be classified as planets but too small to become stars. However, this definition ignores the two very different mechanisms that can form them: the direct collapse of gas clouds and formation within the accretion disks of massive stars. https://phys.org/news/2026-08-tess-rare-brown-dwarf-orbiting.html Astronomy Thu, 13 Aug 2026 17:00:06 EDT news705841178 Detecting water where none remains today: Neutron and X-ray tomography make it possible. In an international study conducted with the participation of the Paul Scherrer Institute PSI, researchers have brought to light macroscopic hydrogen-rich regions inside a Martian meteorite. The findings provide evidence for early water-rock interactions on Mars. https://phys.org/news/2026-08-dry-meteorite-mars.html Astrobiology Thu, 13 Aug 2026 15:00:01 EDT news705841861 A popular myth about black holes is that they act like giant cosmic vacuum cleaners, sucking in everything around them. But Wladimir Lyra's research found a new mechanism around supermassive black holes that is more like a cosmic nursery, giving birth to planets more massive than Jupiter. https://phys.org/news/2026-08-supermassive-black-holes-massive-planets.html Astronomy Thu, 13 Aug 2026 09:11:08 EDT news705831033 It's common to see images of astronauts on the International Space Station exercising, running on special treadmills and pedaling cycles designed for tight quarters. https://phys.org/news/2026-08-space-doesnt-affect-strength-heart.html Space Exploration Wed, 12 Aug 2026 18:20:03 EDT news705759301 Astronomers have captured an unprecedented image of a cosmic recycling project in progress—fragments of a dying star being busted up, stripped and absorbed into interstellar space. https://phys.org/news/2026-08-dying-star-rare-glimpse-universe.html Astronomy Wed, 12 Aug 2026 18:00:07 EDT news705759061 The building blocks of rocky planets may have begun forming just 100 million years after the Big Bang—long before the first galaxies even existed—according to new research from the University of Portsmouth. https://phys.org/news/2026-08-supernovae-seeded-rocky-planet-blocks.html Planetary Sciences Wed, 12 Aug 2026 17:20:03 EDT news705757021 In the image above, a faint trail of stars can be seen stretching across the galaxy. These structures, known as globular cluster stellar streams, are coherent stellar structures that retain a record of their dynamical history and can provide unique insights into the evolution of galaxies and the nature of dark matter. https://phys.org/news/2026-08-stellar-stream-milky-tool-dark.html Astronomy Wed, 12 Aug 2026 16:20:06 EDT news705755275 To date, close to 30,000 satellites have been launched into Earth's orbit, leading to mounting concerns over the debris created when they collide. In a new analysis posted to the preprint server arXiv, Hugh Lewis of the University of Birmingham shows that satellite constellations can grow so large that they cross a critical size beyond which they generate unstable, runaway amounts of debris. The findings point to an urgent need for tougher rules on which satellites are allowed into orbit in the first place. https://phys.org/news/2026-08-satellite-constellations-spiraling-space-debris.html Space Exploration Wed, 12 Aug 2026 15:00:08 EDT news705747610 One of nature's greatest spectacles—a rare total solar eclipse—cast its shadow on Wednesday, briefly turning day into night in Russia's remote Arctic north and western Iceland before heading toward mainland Europe. https://phys.org/news/2026-08-skies-darken-solar-eclipse-south.html Space Exploration Wed, 12 Aug 2026 14:55:47 EDT news705765321