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Mars Base

Solar Storms & Higgs Boson | Jupiter Broadcasting - 0 views

www.jupiterbroadcasting.com/...-storms-higgs-boson-scibyte-37

scibyte39 moon MarMedia apollo scibyte42 dinosaur

shared by Mars Base on 22 Mar 12 - No Cached
  • Solar Storms & Higgs Boson | SciByte 37
  • March 13, 2012
  • More Dinosaur feathers get color
Mars Base

NASA - NASA Spacecraft Images Offer Sharper Views of Apollo Landing Sites - 0 views

www.nasa.gov/...apollo-sites.html

scibyte39 moon Apollo MarMedia

shared by Mars Base on 22 Mar 12 - No Cached
  • NASA's Lunar Reconnaissance Orbiter (LRO) captured the sharpest images ever taken from space of the Apollo 12, 14 and 17 landing sites
  • interactive shows two LRO images of the Apollo 17 landing site. Click and drag on the white slider bar to wipe from one to the other
  • This interactive shows two LRO images of the Apollo 12 landing site. Click and drag on the white slider bar to wipe from one to the other
  • ...5 more annotations...
  • can retrace the astronauts' steps with greater clarity to see where they took lunar samples
  • In the Apollo 17 image, the foot trails, including the last path made on the moon by humans
  • One of the details that shows up is a bright L-shape in the Apollo 12 image. It marks the locations of cables running from ALSEP's central station to two of its instruments. Although the cables are much too small for direct viewing, they show up because they reflect light very well.
  • higher resolution of these images is possible because of adjustments made to LRO's orbit, which is slightly oval-shaped or elliptical
  • paths left by astronauts Alan Shepard and Edgar Mitchell on both Apollo 14 moon walks are visible in this image. (At the end of the second moon walk, Shepard famously hit two golf balls.)
Mars Base

Photos of Asteroid Vesta Reveal Bright Surprises | Dawn Spacecraft | Space.com - 0 views

www.space.com/-vesta-surprising-surface.html

scibyte39 Vesta MarMedia

shared by Mars Base on 21 Mar 12 - No Cached
  • amazing new photos
  • reveal strange features never-before-seen on an asteroid
  • Dawn spacecraft highlight odd, shiny spots that are nearly twice as bright as other parts of the asteroid
  • ...9 more annotations...
  • suggesting it is original material left over from the space rock's birth 4 billion years ago
  • Vesta is one of the largest and brightest objects in the main asteroid belt
  • bright material originates from Vesta and has undergone little change since the formation of Vesta over 4 billion years ago
  • photos show surprisingly bright spots all over Vesta
  • bright areas range from large spots (around several hundred feet across) to simply huge, with some stretching across 10 miles (16 kilometers) of terrain
  • [Video: Vesta — Asteroid or Dwarf Planet?]
  • Astronomers have known about variations in Vesta's brightness for some time
  • Photos taken by the Hubble Space Telescope before Dawn arrived at the asteroid also revealed the bright patches.
  • scientists suspect the bright patches on Vesta were exposed during violent collisions with other space rocks
Mars Base

First-Ever Geologic Map of Jupiter's Volcanic Moon Io Unveiled | Jupiter's Pizza Moon |... - 0 views

www.space.com/moon-io-global-map-photos.html

scibyte39 Io jupiter MarMedia

shared by Mars Base on 21 Mar 12 - No Cached
  • first time, scientists have created a global geologic map of Jupiter's moon Io, the most volcanically active object in the solar system.
  • published this week by the U.S. Geological Survey (USGS),
  • new map of Io's geology provides for the first time a detailed record of the different types of landforms and deposits that form the surface
Mars Base

Mercury Surprises: Tiny Planet Has Odd Interior, Active Past | Messenger Spacecraft | S... - 0 views

www.space.com/ries-messenger-spacecraft.html

scibyte39 MarMedia mercury messenger

shared by Mars Base on 21 Mar 12 - No Cached
  • interior unlike that of any other rocky planet in our solar system and a surprisingly dynamic history,
  • remained geologically active for a surprisingly large chunk of its evolutionary history, researchers said
  • planet's huge iron core is even larger than they had thought
  • ...24 more annotations...
  • likely overlain with a solid shell of iron and sulfur
  • layered structure not known to exist on Earth, Venus or Mars
  • Messenger has taken nearly 100,000 images and made more than 4 million measurements of the planet's surface
  • probe is mapping Mercury's surface and gathering data on the planet's composition, magnetic environment and tenuous atmosphere, among other features
  • s original science campaign was designed to last one Earth year
  • NASA announced in November that it had granted the spacecraft a one-year mission extension
  • officially began its extended mission earlier this week.
  • In one study
  • They found that the range of elevations was smaller than that found on either Mars or the moon.
  • also observed that the floors of many Mercury craters have been tilted substantially
  • suggest that internal forces pushed the craters up after the impacts created them
  • not out of the question that Mercury is still active today
  • not very likely
  • have not observed an active eruption or extrusion
  • determined that Mercury has "mascons," large positive gravity anomalies associated with big impact basins
  • first discovered on the moon in 1968 and caused great problems in the Apollo program because they tugged low-orbiting spacecraft around and made navigation difficult
  • Subsequently mascons were discovered on Mars
  • find out that Mercury has
  • appear to be a common feature of terrestrial planetary bodies
  • gravity calculations also suggest that Mercury has an iron core that comprises roughly 85 percent of the planet's radius
  • Earth's iron core covers about half of its radius
  • new findings should help shed light on Mercury's past
  • formation and evolution of rocky planets in general
  • looks like a layer of solid iron sulfide overlies Mercury's core — a feature not known to exist on any other terrestrial planet
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