New models of sublimating nitrogen show that the process creates enough heat to drive the formation and texture of the polygons in Sputnik Planitia. Plus, black holes, star formation, and an interview with Dr. Jonathan McDowell, orbital police.
Using the ESO’s Very Large Telescope Interferometer, scientists have obtained the deepest and sharpest images of Sagittarius A*, the black hole at the center of the Milky Way. They tracked the orbits of stars and were able to more precisely measure the mass of the black hole. Plus, new ways to research meteors, and a review of a Peak Design camera anchor system.
An analysis of the most recent sample taken from the Moon and returned by the Chang’e-5 mission shows that the basaltic rock is about two billion years old. This age implies a previously unknown heat source in the region. Plus, how plants and animals record climate change and this week’s What’s Up.
In three new papers released this week, scientists analyzed data from NASA’s InSight lander to reveal the structure of Mars and its layers, revealing information about the planet’s crust, lithosphere, mantle, and core. Plus, isotopes in an exoplanet’s atmosphere, a potential exomoon being formed, the heart of a radio galaxy, and black holes impeding stellar birth.
Researchers find that the “oddball supernova” of a curiously cool, yellow star was lacking the hydrogen content expected, “stretching what is physically possible.” Plus, finding potentially habitable planets, a gamma-ray burst, ash clouds, and a new lunar map in this week’s What’s Up.