Category Astronomy/Space

Curiosity’s arm over ‘Marimba’ target on Mount sharp Credit: NASA/JPL-Caltech/MSSS

NASA’s Curiosity Mars rover began close-up investigation of a target called “Marimba,” on lower Mount Sharp, during the week preceding the fourth anniversary of the mission’s dramatic sky-crane landing. The Navigation Camera (Navcam) on Curiosity’s mast took this image on Aug. 2, 2016, during the 1,418th Martian day, or sol, since Curiosity landed inside Gale Crater on Aug. 6, 2012, Universal Time (Aug. 5, PDT).

In this scene, the rover has extended its arm over a patch of bedrock selected as the target for rover’s next drilling operation. The drilling collects rock powder for onboard laboratory analysis. The arm is positioned with the rover’s wire-bristle Dust Removal Tool above the target.

NASA’s Jet Propu...

An artist’s drawing a black hole named Cygnus X-1. It formed when a large star caved in. This black hole pulls matter from blue star beside it. Credit: NASA/CXC/M.Weiss

One of the biggest problems when studying black holes is that the laws of physics as we know them cease to apply in their deepest regions. Large quantities of matter and energy concentrate in an infinitely small space, the gravitational singularity, where space-time curves towards infinity and all matter is destroyed. Or is it? A recent study by researchers at the Institute of of Corpuscular Physics (IFIC, CSIC-UV) in Valencia suggests that matter might in fact survive its foray into these space objects and come out the other side.

They consider the singularity as if it were an imperfection in the geometric structure of spa...

Drill hole into the John Klein target within Sheepbed Member of Yellowknife Bay, with a light-toned sulfate veinlet visible on the back wall. The light-toned veins have been identified as sulfates by ChemCam (Nachon et al.; Schroeder et al.) and CheMin (Vaniman et al.). Drill hole is 1.6 cm diameter. Image is white balanced. Scale bar is 2 cm. Credit: Image courtesy of University of Leicester

Mineral veins found in Mars’s Gale Crater were formed by the evaporation of ancient Martian lakes, a new study has shown. The research, by Mars Science Laboratory Participating Scientists at The Open University and the University of Leicester, used the Mars Curiosity rover to explore Yellowknife Bay in Gale Crater on Mars, examining the mineralogy of veins that were paths for groundwater in mudstones...