Each year, NASA’s Chandra X-ray Observatory helps celebrate American Archive Month by releasing a collection of images using X-ray data in its archive.
The Chandra Data Archive is a sophisticated digital system that ultimately contains all of the data obtained by the telescope since its launch into space in 1999. Chandra’s archive is a resource that makes these data available to the scientific community and the general public for years after they were originally obtained.
Now just ten weeks from opposition, Mars is growing in both apparent size and brightness in the pre-dawn sky as the distance between our two worlds decreases. On the morning of Wednesday, 16 March, around the onset of UK nautical twilight, the Red Planet passes just 0.15 degrees from double star Graffias in the constellation Scorpius.
Astronomers can’t find any sign of the black hole at the centre of the quasar SDSS J1011+5442, and they couldn’t be happier. The black hole is still there, of course, but over the past ten years, it appears to have swallowed all the gas in its vicinity. With the gas consumed, researchers were unable to detect the spectroscopic signature of the quasar, which now appears as an otherwise normal galaxy.
An international team of researchers using the Atacama Large Millimetre/submillimetre Array (ALMA) and other telescopes has discovered the power source illuminating a so-called Lyman-alpha Blob — a rare, brightly glowing, and enormous concentration of gas in the distant universe.