12 The QUASAR trial is the largest trial of adjuvant chemotherapy versus observation in CRC, having randomly assigned 3,239 patients, 91% of whom had stage II disease. 2 It provides an ideal data set ...

NuSTAR Observations of a Varying-flux Quasar in the Epoch of Reionization. The Astrophysical Journal Letters , 2025; 979 (1): L6 DOI: 10.3847/2041-8213/ad94ee Cite This Page : ...

The James Webb Space Telescope has uncovered something extraordinary: a quasar within the Milky Way! This video unpacks the science behind quasars, the telescope’s incredible capabilities ...

At the center of 3C 273 lies asupermassive black hole feeding off nearby matter, creating the luminous phenomena we know as a quasar. For decades, 3C 273 has been a cornerstone of extragalactic ...

"To our knowledge, this galaxy-scale quasar-driven wind is currently the earliest one known." Using the James Webb Space Telescope (JWST), astronomers have spotted the earliest powerful "galaxy ...

The black hole powering a quasar 13 billion light-years from Earth is half as massive as all the stars around it — a record high ratio for a quasar host galaxy, astronomers report in a paper ...

A Yale-led team of astronomers has detected an intensely brightening and dimming quasar that may help explain how some objects in the early universe grew at a highly accelerated rate. The discovery, ...