December 2019

Slowing of the solar wind in the outer solar system

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An article published in “The Astrophysical Journal” reports a study on changes in the solar wind in the outer region of the heliosphere, the bubble in which the influence of the Sun is felt. A team of researchers from the Southwest Research Institute led by Dr. Heather Elliott used measurements collected by NASA’s New Horizons space probe’s Solar Wind Around Pluto (SWAP) instrument to compare the speed of the solar wind at distances from the Sun between 1 and 3 times that of the Earth from the Sun and at distances between 21 and 43 times that distance reveals a slowdown between 5% and 7% at distances between 30 and 43 times that of the Earth from the Sun.

Remains of glaciers that sculpted the territory of Deuteronilus Mensae on Mars

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ESA has published new images of the region of the planet Mars called Deuteronilus Mensae captured by its Mars Express space probe’s High Resolution Stereo Camera (HRSC) instrument that show a territory sculpted by the movements of glaciers that created formations such as those known as mesas. That’s a particularly interesting region because already in the last decade traces of ice still there were discovered. In the past, there was perhaps a regional ice cap in that area of ​​which Deuteronilus Mensae represents the remains.