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A Glittering Stellar Nursery Shines In New JWST Image
This sparkling scene of star birth was captured by the NASA/ESA/CSA James Webb Space Telescope. What appears to be a craggy, starlit mountaintop kissed by wispy clouds is actually a cosmic dust-scape being eaten away by the blistering winds and radiation of nearby, massive, infant stars.
The Murchison Widefield Array Just Doubled In Size - What Could It Find Now?
Radio astronomy took another step forward recently, with the completion of Phase III of the Murchison Widefield Array (MWA) in Western Australia. We’ve reported before on how the MWA has investigated everything from SETI signals to the light from the earliest stars. WIth this upgrade, the MWA will continue to operate with much needed improvements while the radio astronomy awaits the completion of the successor it helped enable - the Square Kilometer Array (SKA).
Juno Detects Callisto's "Footprints" in Jupiter's Aurorae
Jupiter hosts the brightest and most spectacular auroras in the Solar System, and its largest moons (the Galileans) create their own auroral signatures known as “satellite footprints” in the planet’s atmosphere. Until now, astronomers had detected the auroral signatures of three Galileans (Io, Europa, and Ganymede), but not Callisto. Thanks to an international team, close-up images of Callisto's footprints have been seen at last.
The JWST's New Contribution To Understanding The Cosmic Dawn: MINERVA
The JWST is performing a new multi-wavelength survey called MINERVA (Medium-band Imaging with NIRCam to Explore ReVolutionary Astrophysics). It'll study four extragalactic fields in greater detail and depth, and will help us understand the Cosmic Dawn.
Clues In A Dusty Disk Point The Way To A Potential Exoplanet
Astronomers struggle to detect small exoplanets directly. One tool they use is to search for the effects these planets have on debris disks around stars. Clues in these disks tell astronomers where they can find sub-Jupiter mass exoplanets.
Catch the Final Total Lunar Eclipse of 2025 Sunday Night
Live in the eastern hemisphere? If skies are clear, you have a chance to see a remarkable sight this Sunday night into Monday morning: the ‘Blood Moon’ of a total lunar eclipse. The eclipse favors the Indian Ocean region in its entirety. Europe sees the eclipse already underway at Moonrise, while Australia catches it in progress at Moonset. Only the Americas sit this one out in person... though you can still catch it live online.
BlueDOGs Might Evolve From Little Red Dots
One of the most difficult parts of astronomy is understanding how time affects it. The farther away you look in the universe, the farther back you look in time. One way this complicates things is how objects might change over time. For example, a supermassive black hole at the center of a galaxy in the early universe might appear one way to our modern telescopes, but the same supermassive black hole might appear completely differently a few billion years later. Understanding the connection between the two objects would be difficult to say the least, but a new paper from researchers at the University of Science and Technology in South Korea describes one potential parallel, between the recently discovered “Little Red Dots” of the early universe and “BlueDOGs” of the slightly later universe.
Astronomers Use a Double-Lensing Technique to Study a Supermassive Black Hole
An international team of astronomers led by Matus Rybak (Leiden University, Netherlands) has proven, thanks to accidental double zoom, that millimetre radiation is generated close to the core of a supermassive black hole. Their findings have been accepted for publication in the journal Astronomy & Astrophysics.
The Butterfly Star And Its Planet-Forming Disk
The so-called Butterfly star gets its name from its edge-on appearance. The star's protoplanetary disk blocks out starlight revealing a nebula, or butterfly wing, on each side. Deeper JWST observations show the disk is tilted and asymmetrical, which affects how planets form.
Ionic Liquids Could Form Naturally And Replace Water As A Biological Solvent
Water is key to life as we know it. But that doesn’t mean its key to life everywhere. Despite the fact that the ability to house liquid water is one of the key characteristics we look for in potentially habitable exoplanets, there is nothing written in stone about the fact that life has to use water as a solvent as opposed to other liquid options. A new paper from researchers at MIT, including those who are developing missions to look for life on Venus, shows there might be an alternative - ionic liquids that can form and stay stable in really harsh conditions.
Webb's Images of Early Galaxies are Providing Fresh Insights into the Early Universe
Images taken with the MIRI infrared camera on the James Webb Space Telescope (JWST) have made it possible to observe the first galaxies in long-wavelength infrared light for the first time. Alongside a recent study published in Astronomy and Astrophysics, these images provide new insights into how the first galaxies formed over 13 billion years ago.
Chandra Peers Into A Supernova's Troubled Heart
NASA's Chandra Reveals Star's Inner Conflict Before Explosion - https://chandra.si.edu/press/25_releases/press_082825.html
Metals Are Critical To Life - We Should Screen Exoplanets For Them
Life is complicated, and not just in a philosophical sense. But one simple thing we know about life is that it requires energy, and to get that energy it needs certain fundamental elements. A new paper in preprint on arXiv from Giovanni Covone and Donato Giovannelli from the University of Naples discusses how we might use that constraint to narrow our search for stars and planets that could potentially harbor life. To put it simply, if it doesn’t have many of the constituent parts of the “building blocks” of life, then life probably doesn't exist there.
Cosmic Butterfly Unlocks Secrets of How Rocky Planets Form
Deep in the constellation Scorpius, about 3,400 light years from Earth, a spectacular cosmic butterfly is revealing fundamental secrets about how worlds like our own came to exist. Using the James Webb Space Telescope, astronomers have peered into the heart of the Butterfly Nebula and discovered clues that could transform our understanding of rocky planet formation.
Photochemistry and Climate Modeling of Earth-like Exoplanets
What role can the relationship between oxygen (O2) and ozone (O3) in exoplanet atmospheres have on detecting biosignatures? This is what a recent study submitted to Astronomy & Astrophysics hopes to address as an international team of researchers investigated novel methods for identifying and analyzing Earth-like atmospheres. This study has the potential to help scientists develop new methods for identifying exoplanet biosignatures, and potentially life as we know it.
Scientists Solve the Mystery of Why Similar Asteroids Look Different Colours
When NASA's OSIRIS-REx spacecraft returned from its mission to asteroid Bennu in 2023, it brought back more than just ancient space rocks, it delivered answers to puzzles that have baffled astronomers for years. Among the most intriguing questions was why asteroids that should look identical through telescopes appear strikingly different colours from Earth.
What Technosignatures Would Interstellar Objects Have?
The recent discovery of the third known interstellar object (ISO), 3I/ATLAS, has brought about another round of debate on whether these objects could potentially be technological in origin. Everything from random YouTube channels to tenured Harvard professors have thoughts about whether ISOs might actually be spaceships, but the general consensus of the scientific community is that they aren’t. Overturning that consensus would require a lot of “extraordinary evidence”, and a new paper led by James Davenport at the DiRAC Institute at the University of Washington lays out some of the ways that astronomers could collect that evidence for either the current ISO or any new ones we might find.
3I/ATLAS's Coma Is Largely Carbon Dioxide
All (or at least most) astronomical eyes are on 3I/ATLAS, our most recent interstellar visitor that was discovered in early July. Given its relatively short observational window in our solar system, and especially its impending perihelion in October, a lot of observational power has been directed towards it. That includes the most powerful space telescope of them all - and a recent paper pre-printed on arXiv describes what the James Webb Space Telescope (JWST) discovered in the comet’s coma. It wasn’t like any other it had seen before.
Scientists Crack the Code of the Galaxy's Most Mysterious Steam Worlds
Imagine worlds where water exists in forms so exotic that they defy our everyday understanding of matter, where the familiar liquid we drink every day transforms into something that behaves like neither gas nor liquid. These aren't science fiction fantasies, but real planets that represent some of the most common worlds in our Galaxy, and scientists at UC Santa Cruz have just developed new models to understand them.
New Insights into Coronal Heating and Solar Wind Acceleration
What processes are responsible for our Sun’s solar wind, heat, and energy? This is what a recent study published in Physical Review X hopes to address as a team of researchers presented evidence for a newly discovered type of barrier that the Sun exhibits that could help explain the transfer of energy to heat within the Sun’s outer atmosphere. This study has the potential to help scientists better understand the underlying mechanisms for what drives our Sun and what this could mean for learning about other suns throughout the cosmos.