Massimo Luciani

Picture of the comet 67P/Churyumov-Gerasimenko taken by the Rosetta space probe on May 20, 2015 that shows gas jets coming from its nucleus (Photo ESA/Rosetta/NavCam)

The journal “Astronomy and Astrophysics” will publish an article that illustrates a discovery about the atmosphere of the comet 67P/Churyumov-Gerasimenko generated by the sublimation of the ice it contains. Water, but also carbon dioxide, are turned into steam but thanks to the instrument Alice of the space probe Rosetta it was possible to discover that these molecules get broken and that this happens in two stages.

Roscosmos, the Russian space agency, announced the results of the investigation on the failure of the mission of the Progress M-27M cargo spacecraft. The problem was found to be in the separation system between the spacecraft and the third stage of the Soyuz 2-1a rocket used to launch it. A new Progress mission to bringh supplies to the International Space Station could be scheduled for early July, probably using a Soyuz-U rocket, the version used until recently.

Artistic concept of a galaxy generatic relativistic jets with radio waves coming from its supermassive black hole (Image ESA/Hubble, L. Cal├žada (ESO))

An article published in the journal “Astrophysical Journal” describes a study that established a link between the presence of supermassive black holes that emit jets of materials to nearly the speed of light but also radio waves and galaxy mergers. An international team of astronomers led by Italian INAF researcher Marco Chiaberge used the Hubble Space Telescope in the most extensive survey of the kind ever conducted.

Roscosmos, the Russian space agency, announced the results of the investigation on the problem that caused the failure of the mission of the Proton-M rocket on May 16, 2015. The fault was detected in the turbopump rotor of the rocket’s third stage engine which resulted in an instability in the engine that caused the emergency shutdown. According to the investigation, it’s a design flaw and recommendations were issued to correct it.

Image of the dwarf planet Ceres and one of a region of its surface in details (Image NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

In recent days, NASA’s space probe Dawn approached the dwarf planet Ceres and took a number close-up pictures of its surface. The latest images published by NASA were taken navigation purposes but start showing details of the geological elements, in particular the many craters of varying sizes. They make Ceres look like the Moon and show a story full of impacts.