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Perseverance Has Officially Started Its Search For Signs of Life on Mars MARLOWE HOOD, AFP 10 MARCH 2021 The bundle of instruments known as SuperCam on board the Perseverance Mars rover has collected its first samples in the hunt for past life on the red planet, mission scientists said Wednesday.
The return to Earth years from now of the rocks and soil it retrieves will give scientists the Holy Grail of planetary exploration, Jean-Yves le Gall, president of France s National Centre for Space Studies (CNES), which mostly built the mobile observatory, commented via a YouTube broadcast. These pieces of Mars , he said, may finally answer this fascinating and fundamental question: was there ever life elsewhere than Earth? ....
DNA Explainer: Why sound recording of laser on Mars released by NASA is different The sound of the wind that has been recorded is very different from Earth due to the atmospheric pressure on the Red Planet. #NASAScience joins the discussion which will feature the first audio laser recordings from Mars (Image Source: Twitter/NASA) Share Updated: Mar 11, 2021, 04:41 PM IST National Aeronautics Space Administration or NASA s Jet Propulsion Laboratory (JPL) released two historic audio recordings from the surface of Mars on Wednesday. Both recordings were taken using the rover s SuperCam, which is a rock-vaporizing instrument mounted on the head of the rover s mast that will help scientists hunt for fossils on the red planet. ....
Date Time Share As Good as it Gets: NIST Develops Its Fourth Generation Wire Micrometer that Rivals Best in World The main structural components of the new NIST micrometer–a device for measuring the thickness of fine wire, narrow fibers and similar objects-are made of Invar, a nickel-iron alloy that does not react to small changes in temperature. As a result, the measuring device is less prone to error than other state-of-the-art instruments. A laser beam enters from the left side of the drawing and enters a beam splitter cube (1), which divides the beam into two parts. One part remains in the cube, is reflected from a side mirror back towards the center and serves as the reference beam. The other part hits the retroreflector (2). As the floating carriage (3) moves away from the splitter cube and toward the back end of the anvil (4), the distance between the retroreflector and the cube splitter varies (5 When the two beam are brought back together, the laser reports ....