Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10915 Period Covered: 08:00 PM June 01, 2026 - 07:59 PM June 02, 2026 (DOY 153/0000z - 153/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17724 Geoffrey Mo, California Institute of Technology An ultraviolet time-domain survey of the compact binary population in 47 Tucanae 18010 Benjamin Proudfoot, University of Central Florida Board of T ...Continue Reading

INBOX ASTRONOMY STScI Scientists Surprised to Find Brightness ‘Gap’ in Ancient Star Cluster Release date: Wednesday, June 3, 2026 10:00:00 AM Eastern Daylight Time Tools developed at STScI for the Hubble Space Telescope were critical to this discovery. In a serendipitous discovery, STScI scientists using the Euclid space telescope have for the first time found a red-dwarf brightness “gap” feature in the population of a globular cluster—an ancient, crowded collection of stars. A similar gap was first identif ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10914 Period Covered: 08:00 PM May 31, 2026 - 07:59 PM June 01, 2026 (DOY 152/0000z - 152/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17804 R. O. Loyd, Eureka Scientific Inc. STELa: Survey of Transiting Exoplanets in Lyman-alpha 17818 Christopher Morgan, United States Naval Academy Structure of the Extreme-UV Continuum Source in th ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10913 Period Covered: 08:00 PM May 30, 2026 - 07:59 PM May 31, 2026 (DOY 151/0000z - 151/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17520 Louise Breuval, Space Telescope Science Institute - ESA A 1% cross-calibration of Cepheids, TRGB, and JAGB in five nearby galaxies with HST 17710 Martin Millon, University of Geneva, Department of ...Continue Reading

JWST Observer Latest News JWST Observer Events at the 248th Meeting of the AAS The astronomical community will receive updates on JWST and have opportunities to interact with experts during the 248th AAS meeting. View All JWST Observer News ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10912 Period Covered: 08:00 PM May 29, 2026 - 07:59 PM May 30, 2026 (DOY 150/0000z - 150/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17308 Cameron Lemon, Stockholm University An HST Gap Program for lensed Quasars 17520 Louise Breuval, Space Telescope Science Institute - ESA A 1% cross-calibration of Cepheids, TRGB, and JAGB in five ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10911 Period Covered: 08:00 PM May 28, 2026 - 07:59 PM May 29, 2026 (DOY 149/0000z - 149/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17724 Geoffrey Mo, California Institute of Technology An ultraviolet time-domain survey of the compact binary population in 47 Tucanae 17756 Paul Goudfrooij, Space Telescope Science Institute Quantify ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10910 Period Covered: 08:00 PM May 27, 2026 - 07:59 PM May 28, 2026 (DOY 148/0000z - 148/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17724 Geoffrey Mo, California Institute of Technology An ultraviolet time-domain survey of the compact binary population in 47 Tucanae 17756 Paul Goudfrooij, Space Telescope Science Institute Quantify ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10909 Period Covered: 08:00 PM May 26, 2026 - 07:59 PM May 27, 2026 (DOY 147/0000z - 147/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17779 Scott Chapman, University of British Columbia A massive protocluster at z=4.3 selected by the South Pole Telescope 18056 David Rupke, Rhodes College Growing in the Wind: OVI Spectroscopy of Cool ...Continue Reading

Earlier reports Convert Day of Year The Hubble Space Telescope Unlocking the Secrets of the Universe Daily Report #10908 Period Covered: 08:00 PM May 25, 2026 - 07:59 PM May 26, 2026 (DOY 146/0000z - 146/2359z) Program Principal Investigator Program Title Science Observations Scheduled 17833 Julianne Dalcanton, Flatiron Institute Bringing HST to the VLA: The Interaction of Stars and Gas in the Local Group 18011 Na'ama Hallakoun, Weizmann Institute of Science White dwarfs with incons ...Continue Reading