Nice World News photos

Some cool world news images:

Brazil at Night (NASA, International Space Station, 06/12/14)
world news
Image by NASA’s Marshall Space Flight Center
Early morning of June 12, one of the Expedition 40 crew members aboard the International Space Station took this picture of Brazil, site of the 2014 World Cup soccer matches, which start this week. Sao Paulo is the large cluster of night lights near the coast on the right side of the frame. Rio de Janeiro is the coastal city to the left of Sao Paulo. Belo Horizonte is the cluster of lights near frame center.

Image credit: NASA

Original image:
www.flickr.com/photos/nasa2explore/14219563670/in/set-721…

More about space station research:
www.nasa.gov/mission_pages/station/research/index.html

Crew Earth Observations on Flickr:
www.flickr.com/photos/nasamarshall/sets/72157621443555137/

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These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin…

Archive: Fjorded Coastline, Greenland (Archive: NASA, Space Shuttle, 08/12/97)
world news
Image by NASA’s Marshall Space Flight Center
Editor’s note: going way back into the archives to 1997 for this beauty, seen during Space Shuttle Discovery’s STS-85 mission. Happy Tuesday, Flickr friends!

This low oblique, northeast view of the south, southeast tip of Greenland shows the glaciated coastline of the world’s largest island. The elongated, dark fingers of the open water from the North Atlantic Ocean that extend towards the interior are fjords. These deep, glacial troughs along the coastline are eroded valleys that once were occupied by valley glaciers. Several valley glaciers can be seen at the head of some of the fjords. The large concentrations of white on the image show the location of the prominent ice fields. The elevated ice fields shown on this image are located between 60 and 61 degrees north latitude.

Greenland is an autonomous country within the Kingdom of Denmark.

Image and caption credit: NASA

________________________________
These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin…

Supernova Remnant SN 1006 (NASA, Chandra, 04/17/13)
world news
Image by NASA’s Marshall Space Flight Center
This year, astronomers around the world have been celebrating the 50th anniversary of X-ray astronomy. Few objects better illustrate the progress of the field in the past half-century than the supernova remnant known as SN 1006.

When the object we now call SN 1006 first appeared on May 1, 1006 A.D., it was far brighter than Venus and visible during the daytime for weeks. Astronomers in China, Japan, Europe, and the Arab world all documented this spectacular sight. With the advent of the Space Age in the 1960s, scientists were able to launch instruments and detectors above Earth’s atmosphere to observe the Universe in wavelengths that are blocked from the ground, including X-rays. SN 1006 was one of the faintest X-ray sources detected by the first generation of X-ray satellites.

A new image of SN 1006 from NASA’s Chandra X-ray Observatory reveals this supernova remnant in exquisite detail. By overlapping ten different pointings of Chandra’s field-of-view, astronomers have stitched together a cosmic tapestry of the debris field that was created when a white dwarf star exploded, sending its material hurtling into space. In this new Chandra image, low, medium, and higher-energy X-rays are colored red, green, and blue respectively.

The new Chandra image provides new insight into the nature of SN1006, which is the remnant of a so-called Type Ia supernova. This class of supernova is caused when a white dwarf pulls too much mass from a companion star and explodes, or when two white dwarfs merge and explode. Understanding Type Ia supernovas is especially important because astronomers use observations of these explosions in distant galaxies as mileposts to mark the expansion of the Universe.

The new SN 1006 image represents the most spatially detailed map yet of the material ejected during a Type Ia supernova. By examining the different elements in the debris field — such as silicon, oxygen, and magnesium — the researchers may be able to piece together how the star looked before it exploded and the order that the layers of the star were ejected, and constrain theoretical models for the explosion.

Scientists are also able to study just how fast specific knots of material are moving away from the original explosion. The fastest knots are moving outward at almost eleven million miles per hour, while those in other areas are moving at a more leisurely seven million miles per hour. SN 1006 is located about 7,000 light years from Earth. The new Chandra image of SN 1006 contains over 8 days worth of observing time by the telescope. These results were presented at a meeting of High Energy Astrophysics Division of the American Astronomical Society in Monterey, CA.

NASA’s Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA’s Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory controls Chandra’s science and flight operations from Cambridge, Mass.

Read entire caption/view more images: chandra.harvard.edu/photo/2013/sn1006_hdr/

Image credit: NASA/CXC/Middlebury College/F.Winklerch

Caption credit: Harvard-Smithsonian Center for Astrophysics

Read more about Chandra:
www.nasa.gov/chandra

p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!

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These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin…

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