The GRB221009A gamma-ray burst as revealed by the gamma-ray spectrometer onboard the KPLO (Danuri).

The strongest gamma-ray burst (GRB) of the century, GRB20221009A, has been detected by the Korean Pathfinder Lunar Orbiter Gamma-ray Spectrometer (KGRS) instrument onboard the Korean Pathfinder Lunar Orbiter (KPLO). KGRS uses a LaBr detector to measure GRB counts with five energy bins in the energy range from 30 keV to 12 MeV. KGRS detected GRB221009A at a distance of 1.

A WIC Agency Drip Marketing Campaign Is Well Received and Improves Program Participation and Retention: A Quasi-Experimental Study.

Background: Little is known about text messaging's influence on child retention in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC).

Objective: This study aimed to evaluate the influence of WICBuzz, a WIC agency drip marketing texting campaign, on retention and participation compared with a comparison WIC agency and to assess WIC participants' perceptions of the campaign's added value.

Design: A quasi-experimental design, with pre- and postimplementation measurement, was used to compare innovation and comparison groups' outcomes.

Ground penetrating radar observations of the contact between the western delta and the crater floor of Jezero crater, Mars.

The delta deposits in Jezero crater contain sedimentary records of potentially habitable conditions on Mars. NASA's Perseverance rover is exploring the Jezero western delta with a suite of instruments that include the RIMFAX ground penetrating radar, which provides continuous subsurface images that probe up to 20 meters below the rover. As Perseverance traversed across the contact between the Jezero crater floor and the delta, RIMFAX detected a distinct discontinuity in the subsurface layer structure.