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Showing 2026Show all
3 papers · 1 filter
astro-ph.EP2026
Atmospheric Reconnaissance of TRAPPIST-1 f with JWST NIRISS SOSS: No Evidence for the Transit Light Source Effect
Olivia Lim, René Doyon, Ryan J. MacDonald +25
In just over three years of operation, JWST has observed all seven planets of the TRAPPIST-1 system. The two innermost planets were found to have little to no atmosphere, barring t…
astro-ph.EP2026★ 4 cited
Europa's Lyman- emissions from HST/STIS observations
L. Roth, K. D. Retherford, J. Saur +13
An image of Lyman- (Ly) emission from Europa obtained with the Hubble Space Telescope Space Telescope Imaging Spectrograph (HST/STIS) has previously provided the first eviden…
astro-ph.EP2026★ 7 cited
Perihelion observations of interstellar comet 3I/ATLAS with the IRAM 30-m telescope
N. Biver, D. Bockelée-Morvan, R. Moreno +6
3I/ATLAS is the third interstellar comet identified as passing through the Solar System. Its high outgassing activity and favourable perihelion passage on October 29, 2025 UT provi…