Missions to Mars have made many exciting discoveries that have transformed our understanding of the planet, but the next step is to bring samples to Earth for detailed analysis in sophisticated laboratories.
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Voxa – descarcă aplicația Voxa și ai acces nelimitat la întreg catalogul în baza abonamentului lunar aflat acum la prețul de 9.99 lei, redus de la 48 lei.
Descarcă aplicația Voxa din App Store sau Google Play și ascultă și tu:
” Ecuația luiDumnezeu ” scrisă de Michio Kaku: – https://bit.ly/45iODJ6
” MarelePlan ” scrisă de Stephen Hawking și Leonard Mlodinow: – https://bit.ly/3skM0YG
și multe alte cărți în format audio.
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Detect, fetch and collect. A seemingly easy task is being tested to find the best strategy to collect samples on the martian surface, some 290 000 million km away from home.
Testing technologies for Mars exploration is part of the daily job of Laura Bielenberg, an ESA graduate trainee for the Mars Sample Return campaign.
The test takes place at the rock-strewn recreation of the Red Planet at ESA’s ESTEC technical centre in Noordwijk, the Netherlands. The nickname of this test site is the ‘Mars Yard’ and is part of the Planetary Robotics Laboratory.
The tube is a replica of the sample caches that NASA’s Perseverance rover is leaving on Mars hermetically sealed with precious martian samples inside. They are called RSTA, an acronym of Returnable Sample Tube Assembly, and to most people on Earth they look like lightsabers.
Laura is investigating sample tube collection strategies, from autonomous detection to pose estimation of sample tubes on Mars, with a testbed called the RABBIT (RAS Bread Boarding In-house Testbed).
The Sample Transfer Arm will need to load the tubes from the martian surface for delivery towards Earth. ESA’s robotic arm will collect them from the Perseverance rover, and possibly others dropped by sample recovery helicopters as a backup.
Besides cameras and sensors, the team relies on neural networks to detect the tubes and estimate their pose. Inspired by the way the human brain works, neural networks mimic the way biological neurons signal to one another.
More news about the Mars Sample Return campaign on ESA’s To Mars and Back blog: https://blogs.esa.int/to-mars-and-back/
Credits: ESA/NASA/JPL-Caltech/GSFC/MSFC
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Visiting an outside galaxy—in your lifetime—is possible! The one trick: time dilation.
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DIY Particle Detector: https://youtu.be/wN_DMMQEhfQ
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Host, Producer: Greg Kestin
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Amy Mainzer is a senior research scientist at NASA’s Jet Propulsion Laboratory. She served as deputy project scientist for NASA’s Wide-field Infrared Survey Explorer mission, an Earth-orbiting telescope designed to survey the entire sky in heat-sensitive infrared wavelengths. Following successful completion of its prime mission, this telescope was renamed NEOWISE and given a new mission to characterize asteroids and comets; Mainzer is the principal investigator. She also is the principal investigator of the proposed Near-Earth Object Camera mission, which would carry out a comprehensive survey of asteroids and comets using a dedicated space telescope surveying the solar system from a vantage point beyond the Earth’s Moon.
Producer Kathleen Kennedy and actor Daisy Ridley took a pause on the set of Star Wars: Episode VIII, to talk about the amazing women that work at NASA.
For more information visit:
https://women.nasa.gov
Daisy Ridley of Star Wars fame introduces us to Charlie Blackwell-Thompson, Space Launch System/Orion Launch Director.
http://www.nasa.gov/feature/blackwell-thompson-named-launch-director-for-slsorion
How scientifically accurate is your favorite sci-fi space battle?
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Joseph Shoer has several extensive, in-depth articles on the physics of space warfare:
http://josephshoer.com/blog/2009/12/thoughts-on-space-battles/
http://josephshoer.com/blog/2010/07/projecting-space-battle-physics/
Space warfare: Almost everything you know is probably wrong http://www.escapistmagazine.com/forums/read/18.100198-Space-Warfare-Almost-Everything-You-Know-Is-Probably-Wrong
Is space warfare really practical? http://www.escapistmagazine.com/forums/read/18.846407-Is-space-warfare-really-practical-except-lasers
Zero-g dogfighting for dummies: http://www.citizenstarnews.com/news/zero-g-dogfighting-dummies
Projectile weapons vs. directed energy weapons: http://forum.gateworld.net/threads/17263-Projectile-Weapons-vs-Directed-Energy-Weapons
Nukes in space: http://www.projectrho.com/public_html/rocket/spacegunconvent.php
Effects of radiation weapons in space: http://www.projectrho.com/public_html/rocket/radiation.php#effects
Could the Death Star really destroy a planet? http://www.universetoday.com/92746/could-a-death-star-really-destroy-a-planet/
“Sir Isaac Newton is the deadliest son of a b***h in space” https://www.youtube.com/watch?v=hLpgxry542M
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In celebration of Star Wars Day, NASA flight engineer Rick Mastracchio hopes to deliver a special message from the International Space Station. Little does he know, however, that the Empire plans to jam his transmissions. Thankfully, R2-D2 is on the case.
From Tatooine to Hoth, there is one legendary weapon that is regarded as the ultimate in Rebel and Empire warfare… the lightsaber. Ewoks, Wookies, Jawas, and droids all cower before the mighty lightsaber. Wanna make your own? Let us take you to a galaxy far, far away and teach you how you can build your own working lightsaber. Trust us, it works.
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About Steve Spangler…
Steve Spangler is a celebrity teacher, science toy designer, speaker, author and an Emmy award-winning television personality. Spangler is probably best known for his Mentos and Diet Coke geyser experiment that went viral in. Spangler is the founder of www.SteveSpanglerScience.com, a Denver-based company specializing in the creation of science toys, classroom science demonstrations, teacher resources and home for Spangler’s popular science experiment archive and video collection. Spangler is a frequent guest on the Ellen DeGeneres Show and Denver 9 News where he takes classroom science experiments to the extreme. For teachers, parents or DIY Science ideas – check out other sources of learning:
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