Using a neutron spectrometer on board the Dawn spacecraft, scientists have found elevated concentrations of hydrogen in Ceres’ Occator Crater, which provides evidence of an icy crust. Plus, everything is on fire in the western United States, and we review “The Past is Red” by Catherynne M. Valente.
Based on X-ray detections from the Neil Gehrels Swift Observatory, scientists used the Chandra X-ray Observatory and found rings called light echoes moving out from a black hole and its companion star, reflecting off the surrounding dust clouds. Plus, solving the puzzle of the Sun and using glassy nodules to find a meteorite impact.
Continuing the ongoing saga of just what is under the Martian south polar ice caps, new research has once again analyzed radar data, and this time, scientists find that clays known as smectites are responsible for the bright reflections once thought to be subsurface lakes. Plus, drama with an ISS docking and some more oddball exoplanets to round out the week.
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.
In a new paper, a renowned physicist’s overview of recent observations shows that the gap in the universe expansion calculations is closing. The Standard Model may be fine after all. Plus, Mars’ methane mystery, an orphan cloud, galaxies moving to collide, and an interview with PSI’s Than Putzig about just what is under Mars’ south polar ice cap.
About 900 million miles away in two different galaxies, a black hole and a neutron star merged, and their gravitational waves have been detected here on Earth. These detections add another type of merger to the collection so far discovered. Plus, new composition data on Mars’ south polar cap and a look back at the Tunguska Event. #AsteroidDay
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