The increasing frequency of so-called '1-in-a-1000-year' weather events highlights how global warming is disrupting rather more typical weather patterns beyond what scientific models can reliably predict. A recent paper proposes a three-tier scientific approach for addressing these unprecedented climate challenges: improving rapid response capabilities, making incremental infrastructure adaptations, and pursuing transformational system changes to manage escalating climate chaos.
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CubeSats have a lot of advantages. They are small, inexpensive, and easily reproducible. But those advantages also come with significant disadvantages - they have trouble linking into broader constellations that allow them to be more effective at their observational or communication tasks. A team from the University of Albany thinks they might have solved that problem by using a customized calibration algorithm to ensure the right CubeSats link up together.
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Located on a mountaintop in Chile, the nearly complete Vera C. Rubin Observatory will capture the Universe in incredible detail. This week saw another huge step for the observatory with the installation of the car sized - yes car sized - LSST camera onto the Simonyi Survey Telescope. The camera is the largest ever built, weighing in at over 3,000 kilograms with an impressive 3,200 megapixels. Coupled to the 8.4 metre optics of the Rubin will allow it to capture everything that happens in the southern sky, night after night.
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On March 11, the California skyline was once again treated to the launch of the SpaceX Falcon 9 rocket from the Vandenberg Space Force Base. It carried two missions into space; SPHEREx to study the origins of the Universe and the molecular clouds of the Milky Way and four other satellites making up PUNCH. This latter mission is tasked with exploring how the Sun's outer atmosphere causes the solar wind.
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Electrolysis has been a mainstay of crewed mission designs for the outer solar system for decades. It is the most commonly used methodology to split oxygen from water, creating a necessary gas from a necessary liquid. However, electrolysis systems are bulky and power-intensive, so NASA has decided to look into alternative solutions. They supported a company called Precision Combustion, Inc (PCI) via their Institutes for Advanced Concepts (NIAC) grant to work on a system of thermo-photo-catalytic conversion that could dramatically outperform existing electrolysis reactors.
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Astronomers using the James Webb Space Telescope (JWST) have completed a survey of galaxies that reveals their rotation directions with unprecedented clarity. Contrary to expectations that galaxy rotations would be randomly distributed, they discovered a surprising pattern, that most galaxies appear to rotate in a similar direction! One hypothesis suggests the universe itself might have an overall rotation, researchers believe a more plausible explanation though is that Earth's motion through space creates an observational bias, making galaxies rotating in certain directions more detectable than others.
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Dark matter - that mysterious, unknown stuff that's detectable only by its effect on other matter - seems to be sparking strong emissions at the heart of the Milky Way Galaxy.
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Dutch astronomer Christiaan Huygens was the first to discover a Saturnian moon way back in 1655. Thanks to his skill as a lens grinder and polisher, he was the first person to see Titan. Over the centuries, we've discovered many more moons orbiting the ringed planet. In a surprising announcement on March 11th, the Minor Planet Center announced the discovery of 128 more moons, almost doubling the previous number.
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Our local star, the Sun has been under the watchful gaze of ESA's Solar Orbiter since its launch in 2020. It's been slowly getting closer and grabbing images using its Extreme Ultraviolet Imager (EUI) which citizen scientists have been stitching together into wonderful time-lapse videos. A recent video covers just 15 minutes of real time but within, you can see an M-Class flare that was unleashed by the Sun. The flares can produce brief radio blackouts here on Earth.
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If you're a regular visitor to Universe Today, you've probably noticed that the website looks dramatically different. Simpler, cleaner, without all those pesky intrusive ads. We're in a new era, now. Here's what happened, why I decided to remove the ads from the site, and what you can expect going forward.
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Of all the moons in the Solar System, Europa is perhaps one of the most fascinating. With a thick ice shell surrounding a subsurface ocean, astrobiologists hope maybe there is life down there! Finding a way through the ice to explore what's below is one of the biggest challenges. It's possible however that the vital chemicals from life could find their way to the surface and through out into space. A new paper proposes an ultraviolet laser could be used to cause amino acids to fluoresce giving away their presence.
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The closest single star to our own Solar System is Barnard's Star. It's 6 light years away and astronomers have just found four new mini-Earth planets in orbit around this red dwarf star. The discovery was made with the MAROON-X instrument on the Gemini North telescope which makes use of the radial velocity method to detect exoplanets. One planet was found in August 2024, the other three were only just added.
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Young stars grow by gobbling up nearby gas and dust. Over time, they can become extremely massive. The most massive stars we know of have up to 200 solar masses. But the flow of matter isn't a one-way street. Instead, young protostars eject some of the matter back into space with powerful jets.
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Looking back in time can seem like a sci-fi fantasy. But the nature of the Universe allows us to do it if we have the right telescope. The JWST is the right telescope, and as part of its observations, it frequently examines ancient galaxies whose light is only reaching us now. One of those ancient galaxies is both bright and enriched with metals, both signs of maturity.
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The U.S. Space Force's X-37B spaceplane (which looks remarkably like a Space Shuttle that someone forgot to put the windows in!) completed its seventh mission this week, touching down at Vandenberg Space Force Base after 434 days in orbit. Although the mission is classified, Space Force officials, said that it followed a highly elliptical orbital path while conducting various tests and experiments. They also described the mission as operating "across orbital regimes," whatever that means…is classified!
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Astronomers know the Flame Nebula well—a stellar nursery around 1,400 light years away. It's less than a million years old and is teeming with brown dwarfs, objects that never quite accumulated enough mass to begin fusing elements in their core. When comparing the James Webb Space Telescope's (JWST) infrared observations with Hubble's visible light images of the Flame Nebula, the difference is, ahem - astronomical! The infrared wavelengths penetrate the obscuring gas and dust, revealing clusters where young stars and brown dwarfs are taking shape.
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Firefly Aerospace's Blue Ghost Mission has successfully touched down on the lunar surface and is now undertaking various experiments. Two of these experiments have been captured on video; the first is the LISTER drill, capable of penetrating the lunar regolith to depths of up to 3 meters. It will provide scientists with data to measure the Moon's cooling rate. Additionally, footage has been obtained of the PlanetVac experiment, which is evaluating regolith sample collection methods under the Moon's vacuum conditions.
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In a recent paper, Adam Hibberd and Marshall Eubanks explore the feasibility of sending a mission to rendezvous with YR4, the asteroid that may pose a hazard to Earth someday.
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Despite having recently officially ended its science operations in January, Gaia, one of the most prolific star explorers ever, is still providing new scientific insights. A recent paper pre-published on arXiv (which has not been peer-reviewed but was submitted to the Astrophysical Journal) took another look at some Gaia data to try to find a unique type of astronomical entity - white dwarf stars that are paired up in a binary with a main sequence one. By applying a machine learning technique called a "self-organizing map," they found 801 new white dwarf-main sequence (WDMS) binaries, increasing the total number ever found by over 20%.
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Ask almost any physicist what the most frustrating problem is in modern-day physics, and they will likely say the discrepancy between general relativity and quantum mechanics. That discrepancy has been a thorn in the side of the physics community for decades. While there has been some progress on potential theories that could rectify the two, there has been scant experimental evidence to support those theories. That is where a new NASA Institute for Advanced Concepts grantee comes in - Selim Shahriar from Northwestern University, Evanston, was recently funded to work on a concept called the Space-borne Ultra-Precise Measurement of the Equivalent Principle Signature of Quantum Gravity (SUPREME-GQ), which he hopes will help collect some accurate experimental data on the subject once and for all.
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Let's face it: Space is a hostile environment for humans. Even on Mars, settlers might have a hard time coping with potentially lethal levels of radiation, scarce resources and reduced gravity. In "Mickey 17" — a new sci-fi movie from Bong Joon Ho, the South Korean filmmaker who made his mark with "Parasite" — an expendable space traveler named Mickey (Robert Pattinson) is exposed over and over again to deadly risks. And every time he's killed, the lab's 3D printer just churns out another copy of Mickey.
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After a long 'eclipse drought,' lunar totality once again spans the Americas
The end is in sight. If skies are clear, North and South America will witness a fine total lunar eclipse early Friday morning, March 14th. This is the first eclipse of 2025, and the first total lunar eclipse for the hemisphere since November 2022.
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When young stars form, they accumulate an accretion disk of dust and gas, which eventually forms planets. Typically, this process lasts less than 10 million years, as the increasing radiation from the star disperses the remaining material. However, recent observations from the James Webb Space Telescope have revealed a protoplanetary disk in a system estimated to be 30 million years old—three times longer than the expected lifespan. Scientists have already determined this is not a debris disk created by colliding planets, it's an intriguing discovery that has forced a review of our model of planetary system and stellar evolution.
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For the second time in a row, SpaceX lost the second stage of its Starship launch system during a flight test, while recovering the first-stage Super Heavy booster.
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An X-ray signal has been detected at the very centre of the Helix Nebula, at the site of its central white dwarf star. It's a burned out stellar remnant that doesn't usually emit flashes of X-ray radiation but a new study has been analysing the outburst. The team of researchers think that the stellar corpse smashed into one of its surviving planets and that the X-rays are coming from the planetary debris as it falls onto the surface of the white dwarf.
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An ultra-hot Neptune exoplanet has been observed by JWST and the image reveals dramatically different hemispheres. The planet orbits so close to its host start that it is tidally locked so one hemisphere remains facing the star. On this permanent daytime side, temperatures reach 2,000°C but the temperatures plummet on the daytime side. The observations show that the daytime side has bright reflective clouds on its cooler western hemisphere but not on its eastern side!
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The Gaia Hypothesis theorizes that all of Earth's systems are tied together, making one large, living organism. While there's still some disagreement about whether or not that hypothesis is true, it is undeniable that many of Earth's systems are intertwined and that changes in one can affect another. As our technology advances, we are becoming more and more capable of detecting changes in those systems and how those changes affect other systems as well. A new proposal from a robotics expert at NASA's Jet Propulsion Laboratory (JPL) takes that exploration one step further by trying to develop a system that takes the "pulse" of a planet.
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The mystery of Dark Matter endures. Despite sixty years of observation and research, scientists still haven't isolated the particle that accounts for roughly 85% of the Universe's mass. However, ongoing experiments and studies have provided insight into how this mysterious mass works. For instance, a research team led by a member of the Tokyo Metropolitan University relied on a new technique that has set new limits on the lifetime of Dark Matter (DM), bringing scientists a step closer to resolving this cosmological mystery.
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Skeptics love to bring up one particular topic regarding long-term human space exploration - radiation. So far, all of the research completed on it has been relatively limited and has shown nothing but harmful effects. Long-term exposure has been linked to an increase in cancer, cataracts, or even, in some extreme cases, acute radiation poisoning, an immediate life-threatening condition. NASA is aware of the problem and recently supported a new post-doc from MIT named Robert Hinshaw via the Institute for Advanced Concepts (NIAC) program. Dr. HHinshaw'sjob over the next year will be to study the effectiveness of an extreme type of mitochondria replacement therapy to treat the long- and short-term risks of radiation exposure in space.
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The Moon's getting to be a popular place. Firefly's Blue Ghost touched down on March 2nd in Mare Crisium. It's the first privately built lander to land safely and begin its mission. The little spacecraft set down safely in an upright, stable position and sent back an "I'm here" signal right away.
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The dividing line between gas giant planets and failed stars is blurry at best. The isolated planetary-mass object SIMP J013656.5+093347.3 could be either one. The distinction is largely semantic. However we choose to label and define it, the object displays a surprisingly complex atmosphere for an isolated object without any stellar energy input.
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We can't take our telescopic eyes off of supernova explosions. There's something compelling about natural objects so massive that they're doomed to terminate themselves in powerful explosions that outshine their host galaxies. Their patterns of shocked and lit-up gas are pleasing to the eye and ignite our curiosity. What exactly is going on to produce these gorgeous forms?
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In an effort to conserve Voyager 2's dwindling energy and extend the spacecraft's mission, NASA has shut down another of its instruments. They did it with the Plasma Spectrometer in October 2024, and it won't be the last. In March, Voyager 2's Low-Energy Charged Particle instrument will be powered down.
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