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Spectroscopy

All articles tagged with #spectroscopy

Early markers could spot osteoarthritis risk in young adults before symptoms
health17 days ago

Early markers could spot osteoarthritis risk in young adults before symptoms

The article highlights that osteoarthritis is increasingly diagnosed in younger, active individuals and discusses how emerging diagnostic techniques—such as spectral fingerprinting using spectroscopy to analyze blood biomarkers—could detect risk before pain or joint damage appears. This early detection could enable preventive actions like targeted exercise, weight management, and injury prevention, potentially reducing long-term disability and healthcare costs. Current treatments focus on symptom management and may involve injections or, in severe cases, joint replacement, but early identification could shift care toward prevention and preservation of joint health.

via The Conversation|
#biomarkers#early-detection#health
Lasers Reveal What Keeps Darwin’s 200-Year-Old Jars Preserved
science18 days ago

Lasers Reveal What Keeps Darwin’s 200-Year-Old Jars Preserved

Scientists used portable spatially offset Raman spectroscopy (SORS) to peek inside Charles Darwin’s 200-year-old preserved specimen jars at the Natural History Museum without opening them. The technique identified preservation fluids in about 80% of jars (mammals/reptiles often in formalin then ethanol, invertebrates in formaldehyde-based mixtures), with 15% partially identifiable and 6.5% not confidently identified. The method helps conserve delicate collections while guiding storage practices across museums, and the study was published in ACS Omega (2026).

via ScienceAlert|
#darwin#museum-conservation#preservation-fluids
Hidden Twin Reshapes the Fate of a LMC Red Supergiant
astronomy27 days ago

Hidden Twin Reshapes the Fate of a LMC Red Supergiant

Astronomers reinterpreted the puzzling behavior of the red supergiant WOH G64 in the Large Magellanic Cloud, finding it is not rapidly dying but part of a binary system with a hotter, smaller companion that interacts with the red star’s extended atmosphere. New optical spectra from SALT show strong titanium oxide bands indicating a cool atmosphere, contradicting claims it was turning into a yellow hypergiant. The strange emissions and the recent dust cloud are explained by material being pulled from the red giant and forming structures around the companion, not by an imminent collapse. The result is a dramatic reminder that binary interactions can mimic signs of stellar death while the star’s evolution continues, with a future supernova still possible but not imminent.

via The Daily Galaxy|
#astronomy#binary-star#large-magellanic-cloud
Iron Bar Mystery Emerges at Ring Nebula's Core
science1 month ago

Iron Bar Mystery Emerges at Ring Nebula's Core

Astronomers using the WEAVE instrument on the William Herschel Telescope have found a giant, straight bar of ionized iron at the center of the Ring Nebula, a first for a nebula. The iron bar is unusually massive and not explained by a jet from the white dwarf or by iron release from dust; its 3D shape could extend beyond our line of sight, and a torn-apart planet origin is unlikely. More observations of other nebulae are needed to uncover the iron's origin.

via ScienceAlert|
#iron#planetary-nebula#ring-nebula
Metallic Disk Around Hidden Companion Dims a Sun-like Star
astronomy1 month ago

Metallic Disk Around Hidden Companion Dims a Sun-like Star

A Sun-like star J0705+0612 dramatically dimmed between September 2024 and May 2025 due to a giant, metal-rich cloud about 1.2 billion miles from the star. The cloud appears bound to a distant companion with a few Jupiter masses—potentially a brown dwarf, giant planet, or low-mass star—carrying a circumsecondary or circumplanetary disk. Gas moves with winds of metals such as calcium and iron, measured with the GHOST spectrograph, indicating a dynamic debris disk around the companion. The star is ~3,000 light-years away, and infrared excess suggests a disk in an older system, implying a late-stage collision may have produced the cloud. This rare observation shows mature planetary systems can experience dramatic, disk-driven obscurations.

via gizmodo.com|
#astronomy#debris-disk#exoplanets
Ring Nebula Reveals a Hidden Iron Bar, Stoking New Space Clues
space1 month ago

Ring Nebula Reveals a Hidden Iron Bar, Stoking New Space Clues

Researchers using the William Herschel Telescope’s WEAVE instrument detected a long, ionized-iron structure—an iron bar—within the Ring Nebula (M57). The bar extends roughly 1,000 Pluto–Sun distances and contains iron mass about that of Mars, located in the nebula’s inner region. Its origin is unknown, with theories ranging from the star’s outer-layer ejection to vaporizing a rocky planet. A follow-up study at higher resolution is planned, and the team published their findings in Monthly Notices of the Royal Astronomical Society.

via Space|
#iron-bar#planetary-nebula#ring-nebula
New Telescope with 2,400 Eyes Achieves First Light in Space Race
science4 months ago

New Telescope with 2,400 Eyes Achieves First Light in Space Race

The 4MOST telescope at ESO's Paranal Observatory in Chile captured its first light on October 18, 2025, marking a significant milestone. It can simultaneously observe 2,400 objects and analyze their spectra across 18,000 color components, enabling detailed studies of stars, galaxies, and the universe's evolution. Its capabilities will support numerous scientific programs over the next 15 years, including understanding galaxy formation, dark matter, and cosmic history.

via Phys.org|
#4most#astronomy#first-light
Scientists Reveal Bizarre Nature of Interstellar Comet 3I/ATLAS
science5 months ago

Scientists Reveal Bizarre Nature of Interstellar Comet 3I/ATLAS

Multiple powerful telescopes including Hubble, TESS, JWST, and SPHEREx have observed interstellar comet 3I/ATLAS, revealing it to be unusually active at a greater distance from the Sun than typical comets and possessing a high proportion of carbon dioxide in its coma, suggesting unique formation conditions or composition. The comet's trajectory and activity provide valuable insights, with further observations expected after perihelion and as it leaves the Solar System.

via ScienceAlert|
#3iatlas#carbon-dioxide#interstellar-comet