Science & Tech

Possible detection of cold molecular gas in REBELS-25, 700 million years after the Big Bang

Astronomers report a possible low-J CO detection in galaxy REBELS-25 at z=7.31, implying a huge cold molecular gas reservoir 700 million years after the Big Bang.

#astronomy, #galaxies, #cosmology, #moleculargas

SCIENCE

Preprint describes three-particle bosonic Pfaffian state in ultracold rubidium atoms

A June 10 arXiv preprint reports a minimal three‑particle bosonic Pfaffian state in ultracold 87Rb — an early step toward non‑Abelian topological matter.

#physics, #quantum, #ultracold, #pfaffian

SCIENCE

JADES Finds Candidate Galaxy Overdensity at z ≈ 10.5 in the First 500 Million Years

JADES reports a candidate concentration of 18 galaxies at z≈10.5 in GOODS‑S, an unusually dense patch in the first 500 Myr that needs spectroscopic confirmation.

#jwst, #jades, #galaxies, #cosmicdawn

SCIENCE

NASA Recasts Artemis III as 2027 Earth-Orbit Rehearsal, Names Four-Astronaut Crew

NASA names Artemis III crew and redefines the mission as a 2027 Earth-orbit test to rehearse docking ahead of a planned 2028 crewed Moon landing.

#nasa, #artemis, #space, #moon

SCIENCE

Preprint reports operation of thorium-229 nuclear clock locked to nuclear transition in crystal

A June 7 arXiv preprint claims operation of a thorium-229 nuclear clock by locking a 148.4 nm VUV laser to a nuclear transition in a thorium-doped crystal.

#physics, #nuclearclock, #thorium229, #precisionmeasurement

SCIENCE

Wildfire Smoke Has Erased Years of U.S. Ozone Gains, NASA-Supported Study Finds

A NASA-backed study finds wildfire smoke has driven up ground-level ozone across the contiguous U.S., wiping out years of air-quality improvements.

#wildfires, #ozone, #airquality, #nasa

SCIENCE

Paper Flags April 1 South Atlantic Fireball as Leading Post‑2018 Interstellar Meteor Candidate

An arXiv preprint argues an April 1 South Atlantic fireball may be the strongest post‑2018 interstellar meteor candidate, but relies on unverified U.S. sensor data.

#astronomy, #meteors, #interstellar

SCIENCE

NASA Confirms End of MAVEN Mission After More Than 11 Years at Mars

NASA says MAVEN, its Mars atmosphere orbiter last heard from Dec. 6, 2025, is unrecoverable after an anomaly that likely drained its batteries.

#mars, #nasa, #space, #maven

SCIENCE

Preprint claims detection of four‑carbon sugar erythrulose in Milky Way molecular cloud

A June 2 arXiv preprint reports erythrulose, a four‑carbon sugar, in a molecule‑rich cloud near the Milky Way's center; result awaits peer review.

#astrochemistry, #interstellar, #sugars, #preprint

SCIENCE

WMO says El Niño likely this summer; governments urged to prepare

WMO: 80% chance El Niño will develop June–Aug 2026, with near‑90% chance it lasts to November. U.N. urges stronger warnings to prepare for heat and rainfall extremes.

#elnino, #climate, #wmo, #weather

SCIENCE

Preprint: JWST spectra suggest carbon disulfide in atmosphere of young exoplanet V1298 Tau e

A new arXiv preprint reports JWST detected carbon disulfide (CS2) in the atmosphere of young exoplanet V1298 Tau e — a result under review that needs confirmation.

#exoplanets, #jwst, #astronomy, #sulfur

SCIENCE

Webb Detects Methane in Interstellar Comet 3I/ATLAS

NASA’s James Webb made the first direct detection of methane in an interstellar object, finding CH4 plus CO2 and water in comet 3I/ATLAS.

#jwst, #interstellar, #comets, #methane

SCIENCE

One‑Positron Quantum Cyclotron Demonstrated, Paving Way for More Precise Positron g‑Factor Tests

A Northwestern-led preprint reports trapping a single positron in a quantum cyclotron — a technical step toward higher‑precision tests of the positron’s magnetic moment and CPT symmetry.

#physics, #antimatter, #particlephysics, #precision

SCIENCE