Recently, an international team, including astronomer Joseph Callingham and other UCL astronomers, made a groundbreaking observation. For the first time, we have a clear signal of a giant stellar eruption outside our Solar System. This significant burst would have devastating effects on any orbiting planets, even though it shows many similarities to processes on our Sun. Artist's impression of a coronal mass ejection around a nearby star. Copyright and credit to Olena Shmahal

Volcanoes on Earth can be dangerous; they remain dormant for years and can erupt unexpectedly. Recently, however, a similar process occurred in the universe. A black hole, located at the center of the galaxy J1007+3540, that hadn't had any activity for 100 million years, suddenly erupted. Not only that, but instead of being a smaller stellar black hole, it was a supermassive black hole. Image of J1007+3540, with a bright inner jet, representing the reactivation of a past dorm

In December 2025, the James Webb Space Telescope (JWST) captured a lemon-shaped exoplanet, officially named PSR J2322-2650b. The planet raised multiple questions among scientists due to its previously unobserved atmospheric composition. Based on this distinct feature, further research is needed to better understand the planet's origin. Exoplanet  PSR J2322-2650b (left) and pulsar (right): artist's conception image copyright and credit to NASA, ESA, CSA, Ralf Crawford (STScI)