Overview

• JWST NIRSpec observations on August 6 reveal a carbon dioxide–dominated coma with detections of H2O, CO, OCS, water ice and dust, and a CO2/H2O mixing ratio of 8.0±1.0.
• NASA’s SPHEREx, observed August 7–15 with supporting IRTF data, reports a bright carbon dioxide coma and features consistent with a carbon‑rich composition.
• Hubble imaging and ground-based follow-up confirm an actively outgassing dust–gas coma as teams refine estimates of the object’s size and activity drivers.
• 3I/ATLAS is the third confirmed interstellar object on a hyperbolic trajectory at roughly 61 km/s and will pass safely without approaching Earth closer than about 1.8 AU.
• NASA and participating astronomers report no evidence for an artificial origin, countering claims promoted by Avi Loeb and other commentators.