An article published in “The Astrophysical Journal” describes the observation of two events consisting of a supermassive black hole that swallowed large amounts of gas and then emits a part of them in the form of very high-energy jets. A team of astronomers led by Julie Comerford of the University of Colorado at Boulder used observations made with various telescopes to capture this repeated activity at the center of a galaxy known as SDSS J1354+1327 or simply J1354.
An article published in the journal “Nature” describes the first observation of the movement of gas inside two small newborn galaxies about 13 billion light years away from Earth. A team led by the Dutch astronomer Renske Smit of the Kavli Institute of Cosmology at the University of Cambridge, UK, used the ALMA radio telescope to detect the processes underway in those early galaxies, verifying that the gas moves similarly to galaxies such as Milky Way. These results were also presented at the 231st meeting of the American Astronomical Society, which was held this week.
A little while ago the SpaceX Dragon spacecraft ended its CRS-13 (Cargo Resupply Service 13) mission for NASA splashing down smoothly in the Pacific Ocean a little more than 420 kilometers (about 326 miles) off the coast of California. The Dragon left the International Space Station a few hours before.
An article published in the journal “Science” describes the discovery of eight areas on the planet Mars where soil erosion revealed the presence of large glaciers. A team of researchers located and studied the areas thanks to NASA’s Mars Reconnaissance Orbiter (MRO) space probe’s High Resolution Imaging Science Experiment (HiRISE) camera. The slopes generated by erosion offer new information on those glaciers’ stratified structure and consequently on the red planet’s climate history.
An article published in the journal “Astronomy & Astrophysics” describes a research on a group of red giant stars located in the halo surrounding the Milky Way. A team of astronomers led by Giuseppina Battaglia of the Istituto de Astrofísica de Canarias examined the composition of a 28-star sample discovering that the presence of some chemical elements is quite different from the halo’s innermost regions. The conclusion is that they were not born in our galaxy but in ancient dwarf galaxies that were absorbed by the Milky Way.