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Showing posts from November, 2025

Gaia Constraints on a 10 Myr Nearby Supernova

What can an ancient supernova teach scientists about Earth and celestial objects? This is what a recently submitted study to Astronomy & Astrophysics hopes to address as a team of scientists investigated the interaction of the remnants of supernova that occurred 10-million years ago with Earth. This study has the potential to help scientists better understand how Earth is influenced by celestial objects and what this could mean for the future of life on Earth, along with potentially habitable worlds beyond Earth. from Universe Today https://ift.tt/VljQhHO via IFTTT

New Model Explains Giant Planet Jet Streams

What can equatorial jet streams on gas giant planets teach scientists about gas giant planetary formation and evolution? This is what a recent study published in Science Advances hopes to address as a team of scientists investigated the mechanisms of jet streams on gas giants (Jupiter and Saturn) and ice giants (Uranus and Neptune). This study has the potential to help scientists better understand not only the formation and evolution of giant planets in our solar system, but exoplanets, too. from Universe Today https://ift.tt/ZhtWQ84 via IFTTT

Scientists Investigate the Biological Effects of Spaceflight Using Worms

A crew of tiny worms will be heading on a mission to the International Space Station in 2026 that will help scientists understand how humans can travel through space safely, using a Leicester-built space pod. from Universe Today https://ift.tt/dhLuXrs via IFTTT

How Hidden Stars Shape Our Search for Technosignatures

How can star populations help astronomers re-evaluate the search for intelligent extraterrestrial life, also called technosignatures? This is what a recently submitted study hopes to address as a team of scientists investigated the parameters of identifying locations of technosignatures, also called extraterrestrial transmitters. This study has the potential to help astronomers constrain the criteria for finding intelligent life in both our galaxy and throughout the universe. from Universe Today https://ift.tt/fjpRh1J via IFTTT

Water Retention on Earth-Like Planets Around Variable Stars

What can star variability—changes in a star’s brightness over time—teach astronomers about exoplanet habitability? This is what a recent study accepted to The Astronomical Journal hopes to address as a team of scientists investigated the interaction between a star’s activity and exoplanetary atmospheres. This study has the potential to help astronomers better understand how star variability plays a role in finding habitable exoplanets, specifically around stars that are different from our Sun. from Universe Today https://ift.tt/1RwdVTB via IFTTT

The Ultraviolet Mystery Inside Newborn Stars

Young stars buried deep in molecular clouds are bathed in ultraviolet radiation, but they shouldn't be. Protostars are too cold and dim to produce UV light themselves, yet James Webb Space Telescope observations of five stellar nurseries in Ophiuchus reveal its unmistakable signature affecting the surrounding gas. Astronomers tested the obvious explanation that nearby massive stars illuminate these birthplaces but subsequently ruled it out. The UV radiation must be coming from inside the star forming regions themselves, forcing a fundamental rethink of how stars are born. from Universe Today https://ift.tt/3QIzcOl via IFTTT

Modeling Venus Volcanic Plumes to Cloud-Level Heights

What is the importance of studying explosive volcanism on Venus? This is what a recent study published in the Journal of Geophysical Research: Planets hopes to address as a team of scientists investigated the potential altitudes of explosive volcanism on Venus. This study has the potential to help scientists better understand the present volcanic activity on Venus, along with gaining insight about its formation and evolution and other planetary bodies throughout the solar system and beyond. from Universe Today https://ift.tt/dhGX9wK via IFTTT

Nancy Grace Roman Has Been Shaken, Frozen, and Screamed At. Now It's Ready For Its Next Round of Tests

The Nancy Grace Roman Space Telescope continues its inexorable march toward launch. It recently completed another series of tests that brings it a few steps closer to a launch pad in Florida. This time, the telescope was split into two separate parts - an inner portion and an outer portion, each of which went through separate tests throughout the fall. from Universe Today https://ift.tt/Qmn9ika via IFTTT

Massive Computer Simulation Creates a Hyper-Realistic Model of the Milky Way

Research led by the RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) in Japan has successfully performed the world’s first Milky Way simulation that accurately represents more than 100 billion individual stars over the course of 10,000 years. from Universe Today https://ift.tt/8XD4H7V via IFTTT

Galaxies Struggle To Grow In Crowded Environments

New research shows how a galaxy's surroundings influence its development. Its size, shape, and growth rate are all affected. It's all based on "the finer details of the cosmic landscape." from Universe Today https://ift.tt/pihlj12 via IFTTT

The Strange Physics Beneath Icy Moons

Beneath the frozen shells of Saturn's tiny moons, hidden oceans might occasionally boil, not from heat, but from dropping pressure as ice melts from below. This strange phenomenon could explain the bizarre geology of worlds like Miranda and Mimas, and reshape our understanding of where to search for life in the outer Solar System. A new study reveals how these distant water worlds operate under physics unlike anything on Earth. from Universe Today https://ift.tt/jTHFeBv via IFTTT

What Seven Decades of Hunting for Aliens Tells Us

Seven billion year old meteorites carrying DNA building blocks. Frozen water on Mars. Amino acids floating in interstellar dust clouds. After seventy years of searching, we've found the ingredients for life scattered throughout the universe but have we found life itself? A new review examines every major claim of extraterrestrial life, from ancient space rocks to UFO sightings, revealing what the evidence actually supports and where wishful thinking has filled the gaps. from Universe Today https://ift.tt/kOAvcBW via IFTTT

A Natural Laboratory Of Spiralling Dust Shells

The JWST has done it again. It's revealed new details hidden from lesser telescopes. The space telescope has detected four spiral dust shells around Apep, a triple star system about 15,000 light-years away. from Universe Today https://ift.tt/u9WhfzZ via IFTTT

Life Is Just Matter With Meaning

What are the physics of life? That is more than just a philosophical question - it has practical implications for our search for life elsewhere in the galaxy. We know what Earth life looks like, on a number of levels, but finding it on another planet could require us to redefine what we even mean by life itself. A new paper from Stuart Bartlett of Cal Tech and his co-authors provides a new framework for how life could be defined that could reach beyond just what we understand from our one Pale Blue Dot. from Universe Today https://ift.tt/4gCHcY3 via IFTTT

Modeling the Fight Between Charged Lunar Dust and Spacecraft Coatings

Understanding how exactly lunar dust sticks to surfaces is going to be important once we start having a long-term sustainable presence on the Moon. Dust on the Moon is notoriously sticky and damaging to equipment, as well as being hazardous to astronaut’s health. While there has been plenty of studies into lunar dust and its implications, we still lack a model that can effectively describe the precise physical mechanisms the dust uses to adhere to surfaces. A paper released last year from Yue Feng of the Beijing Institute of Technology and their colleagues showcases a model that could be used to understand how lunar dust sticks to spacecraft - and what we can do about it. from Universe Today https://ift.tt/M0ZbmSG via IFTTT

Two Years of Listening to the Universe's Most Violent Events

The world's gravitational wave detectors just wrapped up their longest and most productive observation campaign, capturing 250 new collisions over two years of continuous listening. These ripples in spacetime, created by black holes and neutron stars spiralling into each other across the universe, have given scientists their first direct evidence for Stephen Hawking's 1971 theory about black hole surface areas, revealed second generation black holes born from previous mergers, and detected the most massive black hole collision ever observed. The haul represents over two thirds of all gravitational waves ever detected. from Universe Today https://ift.tt/8hZVDKL via IFTTT

Finding 40,000 Asteroids Before They Find Us

Astronomers have just catalogued the 40,000th near Earth asteroid, a milestone that marks humanity's transformation from passive targets to active defenders of our planet. These space rocks, ranging from house sized boulders to some the size of mountains, follow orbits that bring them uncomfortably close to Earth. Each discovery adds another piece to our planetary defence puzzle, though current surveys have found only about 30 percent of the mid sized asteroids that could still cause regional devastation if they struck our world. from Universe Today https://ift.tt/kEHWyRA via IFTTT

The Box vs The Bulldozer: The Story of Two Space Gas Stations

Using in-situ propellant has been a central pillar of the plan to explore much of the solar system. The logic is simple - the less mass (especially in the form of propellant) we have to take out of Earth’s gravity well, the less expensive, and therefore more plausible, the missions requiring that propellant will be. However, a new paper from Donald Rapp, the a former Division Chief Technologist at NASA’s JPL and a Co-Investigator of the successful MOXIE project on Mars, argues that, despite the allure of creating our own fuel on the Moon, it might not be worth it to develop the systems to do so. Mars, on the other hand, is a different story. from Universe Today https://ift.tt/ViWcx7E via IFTTT

NASA Finally Releases Images of 3I/ATLAS Taken by Its Missions at Mars

Two orbiters and a rover captured images of the interstellar object — from the closest location any of the agency’s spacecraft may get — that could reveal new details. from Universe Today https://ift.tt/xKJ7ify via IFTTT

Blue Origin to Build a "Super Heavy" Rocket to Compete with Starship

Blue Origin announced a series of upgrades to New Glenn designed to increase payload performance and launch cadence, while enhancing reliability. The enhancements span propulsion, structures, avionics, reusability, and recovery operations, and will be phased into upcoming New Glenn missions beginning with NG-3. from Universe Today https://ift.tt/Hb9S5QO via IFTTT

Is the Universe Infinite?

The surface of the Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol’ Earth helps us understand what the universe might be doing beyond our observable horizon. from Universe Today https://ift.tt/xZP5XTB via IFTTT

AI Cracks Galaxy Simulation

Scientists have achieved a breakthrough that seemed impossible just months ago, they have simulated our entire Milky Way galaxy down to each of its 100 billion individual stars. By combining artificial intelligence with supercomputer power, researchers created a model that captures everything from galactic arms to the explosive deaths of individual stars, completing in days what would have taken conventional simulations 36 years. This fusion of AI and physics represents a significant shift in how we model complex systems, with implications reaching far beyond astronomy. from Universe Today https://ift.tt/T9FwKZm via IFTTT

How to Imagine an Expanding Universe

I honestly don’t have a decent analogy for you to explain how the universe is expanding without a center and without an edge. It just does, whether we can wrap our minds around it or not. But I CAN give you a way to think about it. from Universe Today https://ift.tt/e6bGlAi via IFTTT

Tracking Mars' Ice Ages From Space

Travelling up from Mars’s equator towards its north pole, we find Coloe Fossae: a set of intriguing scratches within a region marked by deep valleys, speckled craters, and signs of an ancient ice age. from Universe Today https://ift.tt/MzEpWKd via IFTTT

Seeing an Interstellar Comet Through Martian Eyes

When an interstellar comet tears through our Solar System at 250,000 kilometres per hour, pinning down its exact trajectory becomes a race against time. ESA astronomers achieved something unprecedented in October 2025, using observations from the ExoMars Trace Gas Orbiter to improve predictions of comet 3I/ATLAS's path by a factor of ten. By triangulating data from Mars with Earth based observations, scientists demonstrated a powerful technique for tracking fast moving objects that could prove invaluable for planetary defence, even though this particular visitor poses no threat to our planet. from Universe Today https://ift.tt/W5isCu8 via IFTTT

Some Exoplanets Can Create Their Own Water Through Crust-Atmosphere Reactions

Exoplanets need not acquire their water from external sources like asteroids and comets. New experiments show that at least one common type of exoplanet can generate its own water. Interactions between hydrogen and silicates on sub-Neptunes can create water that could make some of the habitable. from Universe Today https://ift.tt/unoUktF via IFTTT

Is LCDM Cosmology Doomed?

All of the proposals floating around out there for invoking dynamical dark energy are a little on the weak side. In many cases, they raise more questions than answers. from Universe Today https://ift.tt/WKcyj6J via IFTTT

The JWST Makes Some Headway Understanding Little Red Dots

Researchers using the NASA/ESA/CSA James Webb Space Telescope have confirmed an actively growing supermassive black hole within a galaxy just 570 million years after the Big Bang. Part of a class of small, very distant galaxies that have mystified astronomers, CANUCS-LRD-z8.6 represents a vital piece of this puzzle that challenges existing theories about the formation of galaxies and black holes in the early Universe. The discovery connects early black holes with the luminous quasars we observe today. from Universe Today https://ift.tt/ur4YPJx via IFTTT

We've Long Thought The Surface Area Of A Black Hole Can't Decrease. Now We Have Data To Back It Up.

Observations of a merging black hole further supports the Area Theorem of black hole thermodynamics, which states that the event horizon of a black hole produced by two merging black holes must have a surface area no less than the areas of the original two. from Universe Today https://ift.tt/jN6zu5x via IFTTT

What's Driving Dark Energy?

To be fair, all scientific models are in some sense wrong from Universe Today https://ift.tt/JHtw7Tc via IFTTT

The Andromeda Galaxy Quenches Its Satellite Galaxies Long Before They Fall In

Galaxies grow massive through mergers with other galaxies. Massive galaxies like the Milky Way and Andromeda not only merge with other large galaxies, they also absorb their much smaller satellite dwarf galaxies. But these smaller galaxies can become quenched long before they're absorbed, and new research examines this process at Andromeda (M31). from Universe Today https://ift.tt/fwoTcOX via IFTTT

How Dark Energy Changed Cosmology Forever

Let’s rewind the clock back…oh, I don’t know, let’s say a hundred years. from Universe Today https://ift.tt/IayHUEf via IFTTT

Capturing A Supernova Explosion Only Hours After It Began

Observations of a supernova explosion have revealed its shape only one day after it was first detected. The exact nature of supernovae explosions are unclear and the subject of ongoing, detailed debate. These new observations with the European Southern Observatory's Very Large Telescope will advance the debate. from Universe Today https://ift.tt/uv6ofnJ via IFTTT

Searching For Exoplanets In The Remnants Of A Dwarf Galaxy

Astronomers have found more than 6,000 exoplanets in the Milky Way. They've even begun to characterize the atmospheres of some of them. But the Milky Way has consumed many of its dwarf satellites. How have exoplanets fared in these remnants? How are they different? To answer those questions, astronomers have to find some of these planets, and a new survey is poised to do just that. from Universe Today https://ift.tt/w5MIzF7 via IFTTT

Asteroid 2024 YR4 Was Earth's First Real-Life Defense Test

At this point in history, astronomers and engineers who grew up watching Deep Impact and Armageddon, two movies about the destructive power of asteroid impacts, are likely in relatively high ranking positions at space agencies. Don’t Look Up also provided a more modern, though more pessimistic (or, unfortunately, realistic?), look at what might potentially happen if a “killer” asteroid is found on approach to Earth. So far, life hasn’t imitated art when it comes to potentially one of the most catastrophic events in human history, but most space enthusiasts agree that it's worth preparing for when it will. A new paper, available in pre-print on arXiv, from Maxime Devogèle of ESA’s Near Earth Object (NEO) Coordination Centre and his colleagues analyzes a dry run that happened around a year ago with the discovery of asteroid 2024 YR4. from Universe Today https://ift.tt/e1DZ8U2 via IFTTT

DESI's Dizzying Results

In March of 2024 the [DESI collaboration](https://ift.tt/TnNifJ7) dropped a bombshell on the cosmological community: slim but significant evidence that dark energy might be getting weaker with time. from Universe Today https://ift.tt/nbRLmJv via IFTTT

Remember That Paper Claiming The Universe Is Decelerating? Here's What A Nobel Laureate Has To Say About It

So I got an email from Adam Reiss. You know, the guy who was awarded the 2011 Nobel Prize in Physics along with Saul Perlmutter and Brian Schmidt for discovering the rate of cosmic expansion is accelerating. He pointed out a few issues with the decelerating Universe paper, and with his permission I'd like to share them with you. from Universe Today https://ift.tt/SIRHwxc via IFTTT

Sunday Night Doubleheader: Catch the 2025 Leonid Meteors and an Aurora Encore

Keep an eye on the sky Sunday night and early Monday morning for the Leonid meteors, and a possible second auroral storm. Once every other generation, the Lion roars. If skies are clear Monday morning, keep an eye out for one of the best annual November showers, the Leonid meteors. Also as an extra treat, the skies may stream with aurora once again. from Universe Today https://ift.tt/W5Zpohs via IFTTT

Cohesion, Charging, And Chaos On The Lunar Surface

Most people interested in space exploration already know lunar dust is an absolute nightmare to deal with. We’re already reported on numerous potential methods for dealing with it, from 3D printing landing pads so we don’t sand blast everything in a given area when a rocket lands, to using liquid nitrogen to push the dust off of clothing. But the fact remains that, for any long-term presence on the Moon, dealing with the dust that resides there is one of the most critical tasks. A new paper from Dr. Slava Turyshev of NASA’s Jet Propulsion Laboratory, who is enough of a polymath that our last article about his research was covering a telescope at the solar gravitational lens, updates our understanding of the physical properties of lunar dust, providing more accurate information that engineers can use to design the next round of rovers and infrastructure to support human expansion to our nearest neighbor. from Universe Today https://ift.tt/HmQJOjB via IFTTT

Chinese Astronauts Return After a Delay Imposed by Space Junk

The Shenzhou-20 mission's three-person crew has returned home after more than a week of delays caused by damage to their spacecraft, allegedly caused by an impact with a tiny piece of space debris. from Universe Today https://ift.tt/rE9xowq via IFTTT

The Seven Sisters Have Thousands of Hidden Siblings

Astronomers have discovered that the famous Pleiades star cluster, otherwise known as the "Seven Sisters" is actually the bright core of a sprawling family of stars spread across nearly 2,000 light years. By combining stellar spin measurements with precise motion tracking, researchers identified over 3,000 related stars and revealed the Pleiades is twenty times larger than previously thought. from Universe Today https://ift.tt/4tAT019 via IFTTT

The Solar System Is Racing Through Space Far Faster Than Expected

Astronomers have discovered that our Solar System is moving through the universe more than three times faster than cosmological models predict, a finding that challenges fundamental assumptions about how the universe works. By analysing the distribution of distant radio galaxies using advanced statistical methods, the team detected motion so unexpectedly rapid it earned the rare five sigma statistical significance that scientists consider definitive evidence. from Universe Today https://ift.tt/Vp1xoNY via IFTTT

Life Might Show Up As Pink And Yellow Clouds On Distant Worlds

Carl Sagan, along with co-author Edwin Salpeter, famously published a paper in the 70s about the possibility of finding life in the cloud of Jupiter. They specifically described “sinkers, floaters, and hunters” that could live floating and moving in the atmosphere of our solar system’s largest planet. He also famously talked about how clouds on another of our solar system’s planets - Venus - obfuscated what was on the surface, leading to wild speculation about a lush, Jurassic Park-like world full of life, just obscured by clouds. Venus turned out to be the exact opposite of that, but both of those papers show the impact clouds can have on the Earth for life. A new paper by authors as the Carl Sagan Institute, led by Ligia Coelho of Cornell, argues that we should look at clouds as potential habitats for life - we just have to know how to look for it. from Universe Today https://ift.tt/4SrPXvM via IFTTT

NASA Faces Another Shift in Its Leadership — and in Its Vision

The next few months are likely to bring a dramatic transition for NASA, under the leadership of a new administrator who has new ideas about changing the course of the space agency. from Universe Today https://ift.tt/OdyCD2N via IFTTT

An Explanation For The JWST's Puzzling Early Galaxies

The JWST surprised when it detected very early galaxies that were extremely luminous. This suggested that they were more massive than researchers thought they could be. Not enough time had passed for them to grow so large. New research has an explanation. from Universe Today https://ift.tt/7yMnGir via IFTTT

Miniature Binary Star System Hosts Three Earth-sized Exoplanets

A new discovery adds to the growing menagerie of exoplanets. These days, word of a new exoplanet discovery raises nary an eyebrow. To date, the current number of known exoplanets beyond our solar system stands at confirmed 6,148 worlds and counting. But a recent study out of the University of Liège in Belgium titled Two Warm Earth-sized Planets and an Earth-sized Candidate in the Binary System TOI-2267 shows just how strange these worlds can be. from Universe Today https://ift.tt/7KUnmwz via IFTTT

Demand for JWST's Observational Time Hits A New Peak

Getting time on the James Webb Space Telescope (JWST) is the dream of many astronomers. The most powerful space telescope currently in our arsenal, the JWST has been in operation for almost four years at this point, after a long and tumultuous development time. Now, going into its fifth year of operation, the Space Telescope Science Institute (STScI), the organization that operates the science and mission operations centers for the JWST has received its highest number ever of submission for observational programs. Now a team of volunteer judges and the institute's scientists just have to pick which ones will actually get telescope time. from Universe Today https://ift.tt/9Vl8JLm via IFTTT

New Research Helps Narrow the Search for Elusive Neutrino Sources

A research team has conducted the first systematic search for optical counterparts to a neutrino "multiplet," a rare event in which multiple high-energy neutrinos are detected from the same direction within a short period. The event was observed by the IceCube Neutrino Observatory, a massive detector buried deep within the Antarctic ice. from Universe Today https://ift.tt/Ki61xQE via IFTTT

More Research Shows That Enceladus Has A Stable Ocean That Could Host Life

Is Saturn's moon Enceladus habitable? There's ample evidence that the moon holds a warm ocean underneath its frozen surface, and that the building blocks of life are present in that ocean. But for life to arise and persist, the ocean needs to sustain itself for a long time, and new research shows that's exactly what's happening. from Universe Today https://ift.tt/ypE9zIU via IFTTT

Euclid's First Data Release Sheds Light on Galaxy Evolution

ESA’s Euclid space telescope is revealing the patterns of galaxy evolution of millions of galaxies across cosmic time. Scientists from the Max Planck Institute for Extraterrestrial Physics (MPE) are using this data to trace how galaxies grow, merge, and transform. from Universe Today https://ift.tt/qHugyvw via IFTTT