NASA’s Chandra X-ray Observatory has released an expanded source catalogue spanning 22 years of observations, covering around 400,000 cosmic X-ray sources. The dataset captures high-energy events across the universe, from black holes to stellar remnants, and can be combined with Hubble and James Webb data. Scientists say it offers an unprecedented, long-term record …​NASA’s Chandra X-ray Observatory has released an expanded source catalogue spanning 22 years of observations, covering around 400,000 cosmic X-ray sources. The dataset captures high-energy events across the universe, from black holes to stellar remnants, and can be combined with Hubble and James Webb data. Scientists say it offers an unprecedented, long-term record …  ​ science