At https://phys.org/news/2019-12-osiris-rex-mission-bennu-mysterious-partic… … shortly after NASAs OSIRIS REx spacecraft arrived at Bennu it was discovered the asteroid was active – dislodging particles into space. After studying images beamed back over several weeks scientists wrote a paper for the journal Science (of December 6th 2019). The discharges occurred from different points on the asteroid. Sample collection on Bennu is scheduled to take place in the summer of 2020 – delivered to earth in the autumn.
At https://phys.org/news/2019-12-clues-stellar-masses.html … and see also https://doi.org/10.1051/0004-6361/201935689 … a study in Astronomy and Physics journal concerns the origin of star mass distribution, assembling data from three different sources (radion telescopes, interferometer and space based observatory). They claim there is a link between the mass distribution of interstellar filaments and the mass distribution of stars. The density, or mass per unit length, of the present filaments seem to be the crucial parameter that controls the mass of newly found stars. However, a new question arises, we are told, what is the origin of the density distribution of star forming filaments? The magentic field seems to play a role.
At https://phys.org/news/2019-12-sun-atmosphere-hot-spacecraft-unravel.html … concerns NASAs Parker Solar Probe. The high temperatures of the corona causes it to expand into space as a coninuous outflow of plasma.