The SoyuzTMA-18M spacecraft approaching the International Space Station (Image ESA)

A little while ago the Soyuz TMA-18M spacecraft docked to the International Space Station. On board there are ESA astronaut Andreas Mogensen and cosmonauts Sergei Volkov and Aidyn Aimbetov. The three of then were launched from the Baikonur Cosmodrome in Kazakhstan last Wednesday. In a couple of hours the hatches between the Soyuz TMA-18M and the Station will be opened and the newcomers will be welcomed by the rest of the crew.

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.

On the left a picture of the Sun taken by the SDO space probe, at the center a close-up of a prominence and on the right a picture of the Earth in the same scale (Image NASA/JAXA/NAOJ)

Two articles published in “The Astrophysical Journal” describe a study of what is known as the coronal heating problem. For decades, scientists have been trying to understand why the temperature on the surface of the Sun is about 6,000 Kelvin while the corona, the region between the surface and the area of ​​the outer atmosphere, can reach temperatures of several million degrees. Now a team of researchers led by Takenori Okamoto of the Solar-Terrestrial Environment Laboratory at Nagoya University and ISAS/JAXA and Patrick Antolin of the National Astronomical Observatory of Japan, Tokyo, offers an explanation, tied to resonant absorption.