The currency value of the SDR is determined by summing the values in U.S. dollars, based on market exchange rates, of a basket of major currencies (the U.S. dollar, Euro, Japanese yen, pound sterling ...

Oct. 29, 2025 — NASA’s James Webb Space Telescope has captured the first detailed look at a carbon-rich disk surrounding the exoplanet CT Cha b, located about 625 light-years from Earth. The ...