ESA has published new images of a crater called Ismenia Patera on the planet Mars captured by the Mars Express space probe. The red planet is full of craters but this is unique because generally those formations are the result of a meteorite impact while Ismenia Patera could be what remains of a supervolcano that was active when Mars was very young. A very violent volcanic activity may have caused the destruction of other traces of a supervolcano at the same time creating the strange, somewhat irregular formation we see today.
An article published in the journal “Nature Astronomy” describes a research that offers new clues about the comet 67P/Churyumov-Gerasimenko’s formation. A team led by Stephen Schwartz of the University of Côte d’Azur and the University of Arizona conducted a series of computer simulations to study the formation of comets like this one, formed by two lobes, expanding previous studies confirming them and offering an explanation to some of its characteristics.
A little while ago the astronauts Randy Bresnik and Paolo Nespoli and the cosmonaut Sergey Ryazansky returned to Earth on the Soyuz MS-05 spacecraft, that landed without problems in Kazakhstan. The three of them spent almost 5 months on the International Space Station, where they arrived on July 28, 2017 as part of Expedition 52.
ESA has released images captured by its Mars Express space probe that show the Mars area called Sirenum Fossae. The High Resolution Camera Stereo Camera (HRSC) camera allowed to take photos of an area whose appearance was determined by an ancient volcanic activity, with the result that a system of tectonic faults called graben in jargon stretched for thousands of kilometers on the red planet’s surface.
Two articles published in the journal “Monthly Notices of the Royal Astronomical Society” describe two researches on comet 67P/Churyumov-Gerasimenko based on data collected by ESA’s Rosetta space probe. In an article, a team led by Jürgen Blum of the Technische Universität Braunschweig, Germany, used the data collected to find out how the comet formed. In the other article, a team led by Jessica Agarwal of the Max Planck Institute for Solar System Research in Göttingen, Germany, described a plume on the surface of the comet that could have been generated by pressurized underground gas or by the crystallization of amorphous water ice.