Aldehydes are ubiquitous in star-forming regions and carbonaceous chondrites, serving as essential intermediates in metabolic pathways and molecular mass growth processes to vital biomolecules necessary for the origins of life.
Interstellar
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Imaging & Spectroscopy, Interstellar, Status Report
Stellar Contamination Correction Using Back-to-Back Transits of TRAPPIST-1 b and c
Stellar surface heterogeneities, such as spots and faculae, often contaminate exoplanet transit spectra, hindering precise atmospheric characterization.
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Hydrogenation Of Acetaldehyde On Interstellar Ice Analogs Reveals Limited Destruction
We sought to determine which are the main hydrogenation paths of acetaldehyde (CH3CHO). As a partially unsaturated molecule, CH3CHO can have links with more hydrogenated species, like ethanol (C2H5OH) or […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
MINDS. JWST-MIRI Reveals a Peculiar CO2-rich Chemistry in the Drift-dominated Disk CX Tau
Radial drift of icy pebbles can have a large impact on the chemistry of the inner regions of protoplanetary disks. Compact dust disks (≲50 au) are suggested to have a […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Interstellar, Status Report, Video, Audio, Webcasts, Podcasts
Hubble’s Inside the Image: Protoplanetary Disks (Video)
NASA’s Hubble Space Telescope has captured stunning images of protoplanetary disks—dynamic, swirling structures of gas and dust surrounding young stars.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Interstellar, Press Release, Stellar Cartography
ALMA Reveals the Birthplace of a Planetary System
The Atacama Large Millimeter/submillimeter Array (ALMA) has successfully observed a site of planet formation by detecting a high concentration of dust grains, a planet-forming material, outside the orbits of just-formed […]
![Continuum noise power and FX complex correlator measurements, observed on MJD 60586, are presented together with the statistical power of 3.7 Hz bandwidth, 0.27 s duration polarized pulse pairs, recorded during the 123.8 day experiment. The high correlator response at 5.5 hr RA is due to the Orion A emission nebula at -5.4º DEC. [10][11]. Instrument delay difference of -82 ns between interferometer elements was compensated by choosing to display the -5 x 16 ns correlator tap. The bandwidth of the continuum and correlator measurements is approximately 50 MHz, at 0.27 s integration. The timedependent geometric space delay was not compensated, resulting in the approximate sawtooth phase response across RA, indicating a period of 0.117 hr RA. The prior pointing direction of interest indicates greater than 6 standard deviations Cohen’s d in the 5.1675 ± 0.00375 hr RA bin, within the prior range, 5.25 ± 0.15 hr RA. A second apparent response is indicated in two adjacent bins centered at 8.8425 hr RA, with apparent RA aliasing at ±0.12 hr RA. Figs. 2 and 3 show detail. -- eess.SP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/12/A-Signal-Discovery-Step-In-Interstellar.png?resize=1200%2C719&ssl=1)
Posted inAI - Data - Apps - Cybernetics, Apps - Games, Astronomy & Telescopes, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, SETI & Technosignatures, Status Report
A Signal Discovery Step In Interstellar Communication
Prior work using synchronized, geographically spaced radio telescopes, and a radio interferometer, suggests that narrow-bandwidth polarized pulse pair measurements repeatedly falsify a noise-cause hypothesis, given a prior celestial direction of […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Water Ice in the Edge-On Orion Silhouette Disk 114–426 from JWST NIRCam Images
We examine images of the protoplanetary disk 114–426 with JWST/NIRCam in 12 bands. This large disk is oriented edge-on with a dark midplane flanked by lobes of scattered light.
Posted inAstrobiology (general), Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Interstellar, Status Report
Chemical Complexity and Prevalence of Life in the Universe: A New Method for the Estimation of Key Terms of Drake Equation
I describe a new method of estimating the prevalence of life in the Universe, based on the fact that more chemically complex environments are more rare. The paper makes three […]
![[L] The x-axis is the Sagan’s parameter of the Kardashev civilization Type K. The y-axis is the mass of PBH in solar mass for a fraction fPBH = 0.01. The colour-bar of the contours shows the quantity Kachieved/K − 1, which Kachieved is the amount of civilization parameter achieved by PBHs. [R] The x-axis is the Sagan’s parameter of the Kardashev civilization type. The y-axis is the fraction of PBH for a mass of MPBH = 1M⊙. And the colour-bar of the contours shows the quantity Kachieved/K − 1, which Kachieved is the amount of civilization parameter achieved from PBHs. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/12/In-Search-of-Extraterrestrial-Artificial-.png?resize=1200%2C719&ssl=1)
Posted inImaging & Spectroscopy, Intelligence & Language, Interstellar, Science Fiction, SETI & Technosignatures, Status Report
In Search of Extraterrestrial Artificial Intelligence through the Dyson Sphere-like structures around the Primordial Black Holes
Are we alone? It is a compelling question that human beings have confronted for centuries. The search for extraterrestrial life is a broad range of quests for finding the simple […]