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Mars Base

Solar Tornadoes Dance Across Sun's Surface in NASA Video | Sun Tornado & Solar Flares |... - 0 views

www.space.com/-tornadoes-nasa-video-sdo.html

FebMedia

shared by Mars Base on 18 Feb 12 - No Cached
  • The tornado-like eruptions of super-hot plasma were spotted by NASA's Solar Dynamics Observatory, which is constantly recording high-definition videos of the sun.
  • shows swirling fountains of plasma creeping across the surface of the sun during a 30-hour period between Feb. 7 and 8.
  • unlike tornadoes on Earth, which are wind-driven phenomena, the sun's plasma tornadoes are shaped by the powerful magnetic field of our star.
  • ...10 more annotations...
  • active region rotating into view provides a bright backdrop to the gyrating streams of plasma
  • particles are being pulled this way and that by competing magnetic forces
  • tracking along strands of magnetic field lines
  • cooler plasma material appears as darker spots on a bright background
  • SDO spacecraft recorded the video in the extreme ultraviolet range of the light spectrum, giving the movie an eerie yellow hue.
  • released
  • SDO video
  • mark the second anniversary
  • on a five-year mission to record high-definition videos of the sun to help astronomers better understand how changes in the sun's solar weather cycle can affect life on Earth.
  • launched on Feb. 11, 2010
Mars Base

Stunning Visualization of 56 Years of Tornadoes in the US - 0 views

www.universetoday.com/...6-years-of-tornadoes-in-the-us

scibyte49 tornado

shared by Mars Base on 01 Jun 12 - No Cached
  • Using information from data.gov, tech blogger John Nelson has created this spectacular image of tornado paths in the US over a 56 year period
  • categorizes the storms by F-scale with the brighter neon lines representing more violent storms
  • Nelson also provided some stats on all the storms in the different categories
Mars Base

Tall, Devilish Storm Skids Across Mars' Surface - Science News - 0 views

www.sciencenews.org/...s_across_Mars%E2%80%99_surface

AprMedia mars tornado

shared by Mars Base on 10 Apr 12 - No Cached
  • Stretching 20 kilometers up from the planet’s surface
  • dust devil recently caught in action on Mars
  • What’s interesting about this dust devil is it’s very, very tall
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  • To see one this size is very rare
  • Mars Reconnaissance Orbiter took the lucky photograph using a high-resolution camera called HiRISE
  • March 14, the camera spotted the dust devil leaving a trail across land in Mars’ northern hemisphere, where spring brings temperatures of up to -25° Celsius in some places
Mars Base

Huge Dust Devil on Mars Captured in Action - 0 views

www.universetoday.com/...vil-on-mars-captured-in-action

scibyte37 mars

shared by Mars Base on 08 Mar 12 - No Cached
  • A towering dust devil, casts a serpentine shadow over the Martian surface in this image acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter
  • Mars orbiters, rovers and landers have all captured devils in action before
  • whirlwind on Mars lofting a twisting column of dust more than 800 meters (about a half a mile) high, with the dust plume about 30 meters or yards in diameter.
  • ...12 more annotations...
  • on Feb. 16, 2012
  • Amazonis Planitia region of northern Mars
  • Evidence of many previous whirlwinds, or dust devils, are visible as streaks on the dusty surface shown in the image
  • like on Earth, winds on Mars are powered by solar heating
  • Mars is now farthest from the Sun,
  • though the exposure to the Sun’s rays is now less, even so, the dust devils are moving dust around on Mars’ surface
  • Dust devils occur on Earth as well as on Mars
  • spinning columns of air, made visible by the dust they pull off the ground
  • Unlike a tornado, a dust devil typically forms on a clear day
  • ground is heated by the sun, warming the air just above the ground
  • eated air near the surface rises quickly through a small pocket of cooler air above i
  • the air may begin to rotate, if conditions are just right.
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