Aman Mishra

NASA’s Roman Space Telescope has taken its first test observation with its planet-imaging instrument. It confirmed that the coronagraph could produce a focused image in space. Revealing faint planets beside bright stars will require further tests of the instrument’s ability to suppress starlight. Roman’s coronagraph optical bench during assembly in September 2022. Archive photo: NASA/JPL-Caltech. There is a useful question to ask of any telescope’s first observation: what, exactly, was being tested?

At California’s Cajon Pass, the stress on neighboring faults may help determine whether an earthquake stops or spreads across a junction. A computer model explores that possibility, without predicting when the next earthquake will happen. Cajon Pass, California. Archive photo: Don Becker / USGS (public domain). A freight train winds through a narrow valley. Power lines cross overhead. Cajon Pass carries transport and utility connections through a landscape crossed by the San Andreas Fault.

Semaglutide reduced important kidney-related outcomes in a large trial of people with type 2 diabetes and chronic kidney disease. A smaller, newer study's main MRI measures showed no significant difference. Secondary findings offered possible mechanisms. MRI scanner; representative image. Photo: Sergei.Verzilin / Wikimedia Commons, CC BY-SA 4.0. Resized. A medicine can help patients before researchers have a complete account of how it helps.