Articles tagged with Astrochemistry
Astronomers have discovered water molecules in the envelope of star IRS 3, located near the supermassive black hole Sgr A*. The star's enormous envelope, fueled by rapid mass loss, has allowed water to thrive in its vicinity. This finding suggests that Sgr A* is being enriched with fundamental building blocks of life.
The SDSS-V survey has released its twentieth public data release (DR20), providing a massive catalog of high-quality spectra of stars across the Milky Way. The dataset includes over two million total spectra, revealing temperatures, ages, and chemical compositions of stars.
A team of researchers from Kyushu University and Max Planck Institute for Extraterrestrial Physics have detected ambipolar diffusion in a prestellar core, weakening magnetic support and leading to gravitational collapse. This finding provides insight into early star formation and the creation of stellar systems like our own.
The study uses the upgraded GRAVITY+ instrument to measure the carbon isotope ratio in Beta Pic B's atmosphere, but finds inconsistent results that challenge its interpretation. The findings suggest that the planet may have formed outside the snowline, where CO was present as ice, rather than gas.
Researchers have discovered stellar cocoons rich in complex organic molecules within a supernova remnant, indicating that newborn stars can remain protected and preserve their molecular composition. The study suggests that the environment of our Solar System's formation may be more diverse than previously recognized.
False-negative results may lead to overlooking environments that could harbor life beyond current detection capabilities. Researchers emphasize the need for targeted research strategies, combining laboratory experiments with modeling research and fieldwork to address these risks.
Researchers found amino acids are consistently more diverse and evenly distributed in biological samples than abiotic ones, while fatty acids show the opposite pattern. This fundamental principle of life may be detectable in data collected by space missions.
Researchers discovered a specific type of water in interstellar comet 3I/ATLAS that contains deuterium, revealing it came from a colder environment. This finding suggests the conditions that led to our solar system's formation are not ubiquitous throughout space.
NASA's Curiosity Mars rover has discovered diverse organic molecules on Mars, including chemicals that could be signs of ancient life. The findings suggest the Martian surface can preserve molecules that could serve as building blocks for life.
The OSIRIS-REx mission has found that asteroid Bennu's boulders are cracked, not porous as initially thought. This discovery transforms our understanding of how to interpret an asteroid's thermal properties from Earth-based observations.
A new study suggests that Saturn's largest moon, Titan, formed from a merger of two earlier moons, and this event may also be linked to the formation of Saturn's rings. The research proposes that Titan is the product of a collision between an extra moon and itself, resulting in the creation of fragments near Titan's orbit.
The James Webb Space Telescope reveals an extraordinary wealth of small organic molecules, including benzene and methane, in the deeply obscured nucleus of a nearby galaxy. The study suggests that cosmic rays are fragmenting PAHs and carbon-rich dust grains, releasing these molecules into the gas phase.
Researchers at Aarhus University have demonstrated that protein building blocks essential for life as we know it form readily in space. Peptides, which bond amino acids together, were found to react with each other to form proteins on dust particles.
A recent study suggests that lunar spacecraft exhaust methane can contaminate areas of the moon where original ingredients of earthly life may be found. The pollution can unfold rapidly, with more than half of the total exhaust methane settling in regions potentially harboring prebiotic organic molecules within seven days.
Scientists studied the effects of two hot stars, Epsilon and Beta Canis Majoris, on the local interstellar clouds around our solar system. The team found that these stars' ultraviolet radiation ionized about 20% of the hydrogen atoms and 40% of the helium atoms in the clouds.
The Southwest Research Institute (SwRI) has launched a new laboratory to investigate the chemical origins of planetary systems. The Nebular Origins of the Universe Research Laboratory aims to connect pre-planetary evolution to planetary formation, filling key data gaps in understanding the solar system's early history.
Researchers found that radiation in space can transform PAHs into pentagon-bearing molecules, which may be key to converting them into buckyballs. These findings shed light on the formation of fullerenes and could help scientists search for similar molecules using tools like the James Webb Space Telescope.
Astronomers detected complex organic molecules in ices outside the Milky Way for the first time, finding five different carbon-based compounds, including methanol and acetic acid. This discovery sheds light on how chemical ingredients for life spread throughout the cosmos.
Researchers found that methane, ethane, and hydrogen cyanide can interact in ways previously thought impossible, expanding our understanding of chemistry before life emerged. This discovery has implications for the origin of life on Earth and may shed light on similar conditions in other cold environments in space.
A new study has revealed chemical signatures of ancient Martian microbial life in the Bright Angel formation, a region of Jezero Crater known for its fine-grained mudstones rich in oxidized iron and organic carbon. The findings suggest that early microorganisms may have played a role in shaping these rocks through redox reactions.
Astronomers discovered a greedy white dwarf star consuming its closest celestial companion at an unprecedented rate. The study found that the super-dense white dwarf is burning brightly due to the mass transfer between the two stars, potentially leading to a massive explosion visible from Earth.
Researchers detected protostellar jets and outflows using ALMA in the Milky Way's outer region, showing that star formation works similarly across diverse cosmic environments. The discovery revealed episodic ejection cycles and unique chemistry in low-metallicity regions.
Astronomers have long been puzzled by the lack of molecular sulfur in space, but a new study suggests that it may be hiding in interstellar ice. The research identifies possible stable configurations of sulfur molecules that can form on icy dust grains, giving scientists a potential road map to solving the puzzle.
Scientists have isolated methanetetrol for the first time, an ortho acid thought to play a key role in early life chemistry. The compound is highly unstable but can release important compounds when given energy.
Researchers developed an innovative AI approach called GraSSCoL to predict complex astrochemical reactions. The model achieved outstanding Top-k accuracy scores, outperforming earlier state-of-the-art models by a significant margin.
Researchers at Max-Planck-Institut für Kernphysik recreated a reaction under conditions similar to those in the early universe for the first time. They found that the rate of this reaction remains almost constant with decreasing temperature, contradicting previous predictions.
Complex organic molecules, precursors to life's building blocks, have been found in a planet-forming disc around the outbursting protostar V883 Orionis. This discovery supports the idea that life's seeds are assembled in space and are widespread.
Researchers at University of Hawaii have successfully created methanetetrol, a molecule once thought too unstable to exist, using extreme conditions. This discovery sheds light on complex reactions happening in deep space and reveals a pathway for the formation of organic molecules across the galaxy.
A 2.35-billion-year-old meteorite offers fresh insights into the Moon's volcanic history and suggests ongoing internal heat generation processes. The rock's distinct composition provides new constraints on when and how volcanic activity occurred on the Moon.
University of Missouri scientists have developed an ice lithography technique that etches small patterns onto fragile biological surfaces without damaging them. The method uses frozen ethanol to protect the surface and apply precise patterns.
Researchers have modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune, finding evidence for a thick, hot atmosphere. The study suggests that the planet is unlikely to be habitable, but offers insights into alternative paths of planetary origins and evolution.
A recent study suggests that Saturn's moon Titan could support simple, microscopic life forms due to its abundant organic content. However, the amount of biomass that can exist in this environment is likely to be extremely limited, possibly only a few pounds.
Researchers estimate that detecting no signs of life on 40-80 exoplanets would allow for an upper limit on the prevalence of life in the universe. However, uncertainties and biases in individual observations must be carefully considered to ensure reliable results.
A new study by researchers at the Institute of Science Tokyo hints that calcium ions played a crucial role in shaping life's earliest molecular structures. The team discovered that calcium dramatically alters how tartaric acid molecules link together, favoring homochiral polymers and potentially influencing the emergence of life.
Richard Willson, a University of Houston professor, has been elected Fellow of the Royal Society of Chemistry for his contributions to the chemical sciences. He has developed innovative methods to detect viruses and other biological threats using glow-in-the-dark nanoparticles.
Astronomers from Niigata University and The University of Tokyo discovered two enigmatic interstellar objects rich in interstellar ices containing water and organic molecules. The ALMA telescope revealed compact distributions of molecular emission lines, indicating kinematically independent objects at different distances. These unusual...
Three UK researchers will receive a £100,000 (US$126,000) prize at the 2025 awards, honouring their work in Life Sciences, Chemical Sciences, and Physical Sciences & Engineering. The winners were selected from 94 nominees representing 45 academic institutions.
Astronomers have mapped the 3D structure of an exoplanet's atmosphere for the first time, revealing a unique climate with powerful winds carrying chemical elements like iron and titanium. The discovery opens the door for detailed studies of alien worlds' weather patterns.
A recent study found that polyester microdroplets can form in salt-rich environments, at low alpha-hydroxy acid concentrations, and in small reaction volumes. This expands on previous research and suggests that polyester protocells were likely more common on early Earth than previously thought.
A global program called TIMES aims to synchronize age models for geological climate records, enabling the study of past warm climate stages and their impact on future climate pathways. The project is crucial for understanding the Earth's climate dynamics and obtaining reliable information about past climate events.
A new study reveals that first-generation planetesimals in the inner solar system were rich in moderately volatile elements, which were later lost during violent cosmic collisions. This discovery reshapes our understanding of how planets acquired their ingredients.
The OSIRIS-REx mission returned a large sample from asteroid Bennu, which Japanese collaborators detected includes all five nucleobases required for life. The analysis revealed high concentrations of ammonia and nitrogen-rich organic matter.
The study analyzed material from asteroid Bennu, finding evidence of building blocks of life, water, and energy. The team also discovered evaporites, which have been found on Earth in dried-out salt lakes, providing insights into the asteroid's formation.
Scientists have discovered birth sites of gigantic elliptical galaxies, suggesting large gas flows and galaxy collisions created these ancient systems. The research, published in Nature, may finally unravel the enigma of how these giant galaxies formed.
A $50 million consortium, led by Virginia Tech, aims to develop high-energy, long-lasting sodium-ion batteries using abundant and inexpensive materials. The initiative seeks to reduce US dependence on critical elements in lithium-ion batteries, paving the way for a more sustainable future in electric-vehicle technology.
SwRI researchers developed a tool to model environments expected on icy moons, accounting for organics and predicting conditions for microbial life. The project aims to constrain environmental factors and provide valuable information about ocean worlds.
A team at MIT discovered pyrene, a large carbon-containing molecule, in a distant interstellar cloud. The finding supports the PAH hypothesis and suggests that pyrene may have contributed to the formation of our solar system's chemical inventory.
Researchers have observed symmetry-breaking dynamics in ionized CO₂ dimers, leading to the formation of CO₃ moieties. This phenomenon has significant implications for atmospheric chemistry and astrochemistry, providing new insights into molecular behavior under extreme conditions.
The James Webb Space Telescope reveals the largest number of carbon-containing molecules in a disk around a young star. The findings have implications for the potential composition of planets that may form in such environments.
The MIRI Mid-INfrared Disk Survey (MINDS) discovered a large variety of carbon-rich gases in the disk surrounding a very low-mass star. This finding suggests that rocky planets with Earth-like characteristics may form more efficiently than Jupiter-like gas giants in such disks.
A team of researchers from the University of Maryland has developed a novel way to produce and observe carbenes, a class of highly reactive molecules necessary for life. They successfully formed a carbene called hydroxymethylene (HCOH) by breaking down methanol with pulses of ultraviolet radiation.
A new study led by Dr. Assaf Hochman uncovers ozone's impact on atmospheric stability and temperature distribution on Proxima Centauri b, a habitable exoplanet tantalizingly close to Earth's solar system. The research highlights the importance of considering interactive ozone in understanding Earth-like exoplanets.
Researchers from IAC analyzed infrared spectroscopic data to identify fullerenes in planetary nebula Tc1. They found a link between fullerenes and hydrogenated amorphous carbon grains.
Researchers discovered that 19 amino acids essential to life on Earth can persist for up to four weeks in concentrated sulfuric acid, which is similar to the concentrations found in Venus' clouds. This finding suggests that the clouds of Venus could support complex chemicals needed for life.
Scientists have found a shallow soda lake in western Canada that meets the conditions required for life to emerge, including high levels of dissolved phosphate. This discovery provides new support for the idea that life could have emerged from lakes on early Earth, around 4 billion years ago.
The samples from Wild 2 comet have revealed a record of the solar system's dynamic formative years, shedding light on the events that shaped its history. Researchers have found unusual carbon-iron assemblages and precursors to igneous spherules in the comet material.
Researchers detected complex structure with three concentric rings in the innermost region of the disk, rich in dust and minerals. The discovery suggests two planets may be forming within the gaps, with masses similar to Jupiter.
Researchers from the University of Cambridge identified iron-bearing sulfate minerals as the cause of the mysterious UV absorption feature on Venus' clouds. The discovery was made possible by synthesizing and analyzing minerals under extreme chemical conditions.
Astronomers studying two distant galaxies in the early universe reveal unprecedented molecular diversity, shedding light on the lives of prodigious star factories. By analyzing light from over 13 molecules, researchers gain insights into the physical and chemical conditions in these galaxies.
A recent study by researchers from the University of California San Diego has provided evidence that amino acids, the building blocks of life, can survive impact speeds of up to 4.2 km/s in Saturn's icy moon Enceladus' ice plumes. This finding has significant implications for the search for life beyond Earth.