Perseverance finds widespread organic molecules on Mars; JWST hints black holes formed before galaxies

Perseverance finds widespread organic molecules in Jezero Crater rocks NASA's Perseverance rover detected complex organic carbon compounds across several rock formations in an ancient river valley on Mars, published in Science Advances. The SHERLOC instrument found macromolecular carbon preserved just micrometers beneath the surface, suggesting organic matter was more widespread billions of years ago than previously understood. 12

JWST evidence suggests black holes formed before galaxies in early universe Observations of distant objects like UHZ1 and 'little red dots' show black holes with masses exceeding their host galaxies' stellar mass, up to 1,000 times the local ratio. This challenges the traditional sequence that galaxies formed first, indicating massive black hole seeds may have dominated in the early cosmos. 3

Lamprey brain atlas reveals 450-million-year-old vertebrate intelligence blueprint Researchers constructed the first 3D single-cell transcriptomic atlas of a lamprey brain, showing core frontostriatal networks match those of mice. The atlas also uncovered 'moonlighting' neurons that transmit both excitatory and inhibitory signals, revealing the common ancestor of all vertebrates had a highly complex brain. 4

Gut bacterial metabolite imidazole propionate linked to Alzheimer's pathology A study of 1,196 cognitively unimpaired adults found that higher plasma levels of imidazole propionate (ImP) — a gut bacterial metabolite — were associated with lower preclinical cognitive scores and Alzheimer's biomarkers. Fecal metagenomic analysis linked ImP producers to Alzheimer's phenotypes, suggesting a novel gut-brain pathway. 5

Euclid telescope releases 6-gigapixel Milky Way heart image for exoplanet hunting ESA's Euclid telescope produced a 6-gigapixel visible-light mosaic of the Milky Way's central bulge, featuring 60 million individual stars. The high-resolution map will enable astronomers to detect exoplanets via gravitational microlensing, and includes 51 known planetary systems. 6

SETI scan of interstellar comet 3I/ATLAS finds no alien signals Using the Allen Telescope Array, scientists scanned 3I/ATLAS across 1–9 GHz for nearly 74 million narrowband signals but found no technological signatures. The object behaves like a natural comet, though researchers emphasize interstellar visitors remain important targets for technosignature searches. 7

Fossil discovery rewrites 150 years of tetrapod developmental theory Analysis of hatchling fossils from Illinois' Mazon Creek beds found no evidence of a larval stage or external gills in early tetrapods. This challenges the long-held assumption that metamorphosis was ancestral, suggesting a more gradual, direct transition from aquatic to terrestrial life. 8

AI reveals water molecules switch between two liquid states, solving century-old puzzle Researchers at City University of Hong Kong used AI and advanced simulations to confirm water constantly oscillates between a dense and a less-dense molecular arrangement at room temperature. Published in Nature Physics, this finding explains water's anomalous properties like density maximum at 4°C. 9

Air-stable surface electrene enables efficient ammonia synthesis Oxygen-doped BaSiN₂ — an air-stable surface electrene — was shown to catalyze ammonia production at 43 mmol g⁻¹ h⁻¹ with Ru loading at 300°C and 0.9 MPa. Its ultra-low work function (~1.5 eV) donates electrons to N₂, overcoming a major stability barrier for electrene-based catalysts. 10

Heliconius butterflies with pollen diet reveal new aging model Heliconius butterflies can live up to a year — far longer than typical butterflies — because they consume pollen for essential amino acids and lipids. Using a custom grip-strength tool called 'The Pullinator,' researchers linked this diet to delayed muscle decline, offering a new model for aging research. 11

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Comb jelly organiser discovery shows body-axis blueprint predates all animals University of Jena biologists transplanted blastopore tissue from one comb jelly embryo to another, inducing a second body axis — exactly as Hans Spemann did with amphibians in 1924. The Nature paper shows that the 'organiser' mechanism for 3D body formation existed in the earliest-diverging animal lineage. 12

Wild tomato genome assemblies reveal structural variants block recombination De novo genomes of Solanum pennellii and S. cheesmaniae — stress-resistant wild tomatoes — add 146 Mbp to prior references and show Tekay retrotransposon explosions. Sequencing 709 recombinant plants revealed female meiosis has higher crossover rates, with coldspots linked to megabase-scale inversions and indels. 13

Hubble discovers tiny galaxy MXDFz4.4 that helped clear cosmic fog The galaxy MXDFz4.4, existing ~1.4 billion years after the Big Bang, is 100 times smaller than the Milky Way but forms stars at 10 times the rate. Its intense ultraviolet radiation pierced the early universe's opaque 'fog,' observed by Hubble and confirmed with JWST data. 14

Most distant Lyman-continuum-emitting galaxy discovered 420 Myr after Big Bang Galaxy LCEz4-M1 in the Hubble Ultra Deep Field, seen 420 million years after the Big Bang, emits ionizing Lyman-continuum radiation that escaped the intergalactic medium. Multi-observatory confirmation (Hubble, JWST, MUSE) reveals a high escape fraction crucial for understanding cosmic reionization. 15

Metallocene 'sandwich' molecule's hidden intermediate captured for first time Researchers at OIST observed and characterized a 'doubly ring-slipped' metallocene intermediate — a fleeting structure where both carbon rings shift binding to the metal. This challenges the classic 18-electron rule and opens new avenues for designing catalysts and functional materials. 16