Skip to main content

Home/ Groups/ SciByte
Rss Feed
Sort By: Most Recent | Popular Filter: All | Bookmarks | Topics Simple Middle
Mars Base

CMS, ATLAS experiments report Higgs-like particle close to the 7 sigma level - 0 views

phys.org/...higgs-like-particle-sigma.html

scibyte75 HiggsBoson

shared by Mars Base on 18 Dec 12 - No Cached
  • t much further analysis is needed to reveal the full details of its identity
  • The next update is scheduled for the spring 2013 conferences
  • for the final word before the LHC resumes running in 2015, we'll probably have to wait some time longer.
  • ...1 more annotation...
  • The latest research findings from the Large Hadron Collider (LHC) at CERN show that the CMS and ATLAS experiments are now reporting that the significance of their observation of the Higgs-like particle is standing close to the 7 sigma level, well beyond the 5 required for a discovery, and that the new particle's properties appear to be consistent with those of a Standard Model Higgs boson.
Mars Base

Twin NASA spacecraft deliberately crash into moon - 0 views

phys.org/...cecraft-deliberately-moon.html

scibyte75 Grail

shared by Mars Base on 18 Dec 12 - No Cached
  • By design, the final resting place was far away from the Apollo landing sites and other historical spots on the moon
  • The Lunar Reconnaissance Orbiter circling the moon will pass over the mountain and attempt to photograph the skid marks left by the washing machine sized-spacecraft as they hit the surface at 3,800 mph
  • the crash site was in darkness, the final act was not visible from Earth.
  • ...1 more annotation...
  • During the primary mission, they flew about 35 miles above the lunar surface. After getting bonus data-collecting time, they lowered their altitude to 14 miles (22 kilometers) above the surface
Mars Base

SVS Animation 4023 - GRAIL Impacts the Moon - 0 views

svs.gsfc.nasa.gov/...index.html

scibyte75 Grail

shared by Mars Base on 18 Dec 12 - No Cached
  • GRAIL ends its successful mission by impacting the Moon on December 17, 2012 at approximately 5:27 p.m. EST (22:27 UT).
  • The two spacecraft were placed in an orbit that takes them within a kilometer of the surface, so low that they will hit the side of an unnamed mountain
  • near the north pole
  • ...1 more annotation...
  • Ebb strikes first, followed 24 seconds later by Flow
  • Mars Base on 18 Dec 12
     
    The two spacecraft were placed in an orbit that takes them within a kilometer of the surface, so low that they will hit the side of an unnamed mountain
Mars Base

Moon Probes' Crash Site Named After Sally Ride | Space.com - 0 views

www.space.com/ail-moon-crash-sally-ride.html

scibyte75 Grail

shared by Mars Base on 18 Dec 12 - No Cached
  • The spot on the lunar surface where NASA intentionally crashed its twin gravity-mapping moon probes
  • Dec. 17) has been named after the late Sally Ride, America's first woman in space
  • Ebb and Flow, slammed into a crater rim near the moon's north pole at 5:28 p.m. EST (2228 GMT)
  • ...2 more annotations...
  • f Sally Ride, who played a key role in Grail's education and outreach efforts
  • Ride had led Grail's MoonKAM project, which allowed schoolkids around the world to select lunar sites for Ebb and Flow to photograph
Mars Base

What an unmanned aerial vehicle can do with depth perception - 0 views

phys.org/...-vehicle-depth-perception.html

scibyte75 Darpa

shared by Mars Base on 17 Dec 12 - No Cached
  • This UAV is capable of both hover and wing-borne flight, making the delivery and precision emplacement of a payload possible
  • A special robotic arm was designed with the capability of carrying up to 1 pound.
  • developed a low-cost vision system to estimate the target's position relative to the hovering vehicle in real time
  • ...10 more annotations...
  • vision system enables the UAV to search and find the target for the emplacement autonomously and then perform the action
  • Our goal
  • was to show we could quickly develop and integrate the right technology to make this work
  • this technology
  • successfully demonstrated
  • A newly developed stereo vision system that tracks the emplacement target and motion of the robotic arm.
  • The vision system, coupled with global positioning system, controls the arm and V-Bat during emplacement.
  • Control logic to maneuver the vehicle and direct the robotic arm to accurately engage the emplacement target.
  • Vehicle stability with the arm extended 6 feet with a 1-pound payload.
  • Autonomous search and detection of the emplacement target and autonomously emplaced a 1-pound payload
Mars Base

Japanese researchers build robot with most humanlike muscle-skeleton structure yet (w/ ... - 0 views

phys.org/...ike-muscle-skeleton-video.html

scibyte75 robot

shared by Mars Base on 12 Dec 12 - No Cached
  • Called Kenshiro, the robot has been demonstrated at the recent Humanoids 2012 conference in Osaka, Japan
  • previous effort resulted in a robot they called Kojiro
  • Kenshiro was preceded by a robot concept the team called Kenzoh
  • ...14 more annotations...
  • the team found that simply adding artificial muscle and bones generally tended to create weight problems
  • upper body alone came to 45 kg
  • with the idea of mimicking human bone and muscle at the individual body part level, i.e. a backbone, calf, or knee joint
  • Each part was custom designed to fall within the weight parameters of actual human limbs and other parts of the body.
  • a robot sized to approximate the average 12 year old Japanese boy
  • bones made of aluminum
  • connected together
  • the way human bones are connected
  • artificial ligaments
  • and a collection of muscles that mimic very closely those in the human body
  • Kenshiro has 160 muscles that are constructed using a single actuator motor for individual muscle groups
  • appears to be a collection of parts cobbled together to form a single whole
  • The robot can walk, but just barely
  • can do deep knee bends, but the rest of the body seems out of sync
Mars Base

Curiosity Rover Report (Dec. 7, 2012): Rover Results at Rocknest - YouTube - 0 views

www.youtube.com/watch

scibyte75 Curiosity

shared by Mars Base on 16 Dec 12 - No Cached
  • Mars Base on 16 Dec 12
     
    Curiosity Rover Report (Dec. 7, 2012): Rover Results at Rocknest
Mars Base

Mars Science Laboratory: Curiosity Rover Nearing Yellowknife Bay - 0 views

marsprogram.jpl.nasa.gov/...index.cfm

scibyte75 Curiosity

shared by Mars Base on 16 Dec 12 - No Cached
  • The NASA Mars rover Curiosity drove 63 feet (19 meters) northeastward early Monday, Dec. 10, approaching a step down into a slightly lower area called "Yellowknife Bay," where researchers intend to choose a rock to drill.
  • Curiosity ended Monday's drive about 30 percent shorter than planned for the day when it detected a slight difference between two calculations of its tilt, not an immediate risk, but a trigger for software to halt the drive as a precaution
  • Curiosity is approaching a lip where it will descend about 20 inches (half a meter) to Yellowknife Bay. The rover team is checking carefully for a safe way down. Yellowknife Bay is the temporary destination for first use of Curiosity's rock-powdering drill, before the mission turns southwestward for driving to its main destination on the slope of Mount Sharp.
Mars Base

Mars Science Laboratory: Mars Rover Self-Portrait Shoot Uses Arm Choreography - 0 views

marsprogram.jpl.nasa.gov/...index.cfm

scibyte75 Curiosity

shared by Mars Base on 16 Dec 12 - No Cached
  • The robotic arm on NASA's Mars rover Curiosity held the rover's Mars Hand Lens Imager (MAHLI) camera in more than 50 positions in one day to generate a single scene combining all the images, creating a high-resolution, full-color portrait of the rover itself.
  • A larger version of the previously released self-portrait is now available online, along with an animation video showing how it was taken, and a practice self-portrait taken earlier by Curiosity's test-rover double on Earth
Mars Base

End of the World: 10 Disasters That Could End It All At Any Given Second - Best of the ... - 0 views

botw.org/endworld.html

scibyte75 End-of-the-World

shared by Mars Base on 13 Dec 12 - Cached
  • Gamma-Ray Burst
  • Gamma-ray bursts are extremely powerful, estimated to have 10 quadrillion times more energy than our sun
  • They are created by the collision of two collapsed stars
  • ...17 more annotations...
  • it is almost impossible to visualize collapsed stars making it even more difficult to predict the location of a gamma-ray burst
  • A burst 1,000 light years from the earth (further away than most of our stars) would create an explosion as bright as our sun and bring a hasty destruction to earth
  • atmosphere and the ozone would provide protection at first it would soon be cooked away by the radiation. UV rays would kill the photosynthetic plankton in the ocean, which provide most of the earth's oxygen
  • At least one burst can be seen each day when watching our sky with gamma-ray vision; it can't be too long before there is one closer to home
  • earth's atmosphere and magnetic field protect us from the consequences of these potentially lethal flares
  • The sun emits solar flares, also known as coronal mass ejections, towards earth frequently
  • These flares are large magnetic outbursts which contain high-speed subatomic particles
  • evidence has been found that sun-like stars far from our solar system can briefly increase in brightness by 20 times
  • hypothesized that these increases are caused by super-flares, which are millions of times more powerful than the common solar flare
  • If our sun were to emit one of these super-flares it would literally fry the earth
  • if our sun's activity were to decrease by a mere 1% (which has been known to happen to many sun-like stars) we would be flung back into another ice age
  • Solar Activity (Super-Flares and Decreased Activity)
  • Particle Accelerators
  • When electric fields are used to accelerate protons they could collide at speed fast enough to create black holes or bits of altered matter
  • These small black holes would slowly engulf our planet
  • pieces of altered matter, called strangeletes, would destroy any ordinary matter they came in contact with, eventually annihilating the entire planet
  • most scientists assure that none of the particle accelerators being used at the present are strong enough to bring about these events
« First ‹ Previous 1141 - 1160 of 2613 Next › Last »
Showing 20▼ items per page