Astronomy / Astrophysics

Artistic representation of the interior of Enceladus with a global underground ocean (Image NASA/JPL-Caltech)

An article just published in the journal “Icarus” describes a research that used data collected by the Cassini space probe to determine that Enceladus, one of Saturn’s moons, has a global underground ocean. That there was an ocean beneath the icy surface of Enceladus was a well-established fact from previous research but it remained to be seen whether the water was liquid all over beneath the surface or only in some warm enough areas.

Artistic concept of NASA's GRAIL space probes during their mission in Moon's orbit (Image NASA/JPL-Caltech)

An article published in the journal “Geophysical Research Letters” describes a research on the implications of multiple asteroid impacts on the Moon some four billion years ago. Using data collected by NASA’s GRAIL (Gravity Recovery and Interior Laboratory) twin space probes, a team of scientists led by MIT (Massachusetts Institute of Technology) discovered a significant porosity in the lunar surface and a network of large seams below it.

Occator crater and the white spots on the dwarf planet Ceres (Image NASA/JPL-Caltech/UCLA/MPS)

NASA has released a new image of the now famous white spots of Ceres, one of the most mysterious geological features found on this dwarf planet. The Dawn space probe is currently mapping its surface from an altitude of 1,470 km (915 miles) and that allowed to take pictures much more detailed than the ones previously available. These new images have a resolution of 140 meters (450 feet) per pixel and are providing new information about the white spots waiting for in-depth analyzes.

The Astro-E2, then renamed Suzaku, satellite during its test phase (Photo NASA)

In recent days, the Japanese Suzaku space observatory has been deactivated. On August 26, 2015, JAXA, the Japanese space agency, communicated the decision to terminate the mission of this satellite specialized in X-ray astronomy. Communications between the mission control center and Suzaku had become intermittent since June 1, 2015 and JAXA, after trying to restore them, decided to start the deactivation procedures.

Composition of multiwavelength images of the galaxy cluster Abell 1033 and the surrounding area (Image NASA/CXC/Univ of Hamburg/F. de Gasperin et al; Optical: SDSS; Radio: NRAO/VLA)

An article in the journal “Monthly Notices of the Royal Astronomical Society” describes a research on the galactic cluster Abell 1033. Combining data from NASA’s Chandra X-ray Observatory, the Westerbork Synthesis Radio Telescope in the Netherlands, NSF’s Karl Jansky Very Large Array (VLA), and the Sloan Digital Sky Survey (SDSS), a team of astronomers reconstructed the history of a cloud of electrons at the cluster’s center. It was reignited after a cosmic collision and for this reason it’s been compared to the legendary phoenix.