Monthly Archives: June 2008

New Space Telescope

New Space Telescope GLAST (Gamma-ray Large Area Space Telescope) is going to explore the birth of the universe. Read this quote from the mission page at Stanford University (http://www-glast.stanford.edu/mission.html)

The key scientific objectives of the GLAST mission are:

  1. To understand the mechanisms of particle acceleration in AGNs, pulsars, and SNRs. This understanding is a key to solving the mysteries of the formation of jets, the extraction of rotational energy from spinning neutron stars, and the dynamics of shocks in SNRs.
  2. Resolve the gamma-ray sky: unidentified sources and diffuse emission.Interstellar emission from the Milky Way and a large number of unidentified sources are prominent features of the gamma-ray sky.
  3. Determine the high-energy behavior of gamma-ray bursts and transients. Variability has long been a powerful method to decipher the workings of objects in the Universe on all scales. Variability is a central feature of the gamma-ray sky.
  4. Probe dark matter and early Universe. Observations of gamma-ray AGN serve to probe supermassive black holes through jet formation and evolution studies, and provide constraints on the star-formation rate at early epochs through photon-photon absorption over extragalactic distances. There are also the possibilities of observing monoenergetic gamma-ray “lines” above 30 GeV from supersymmetric dark matter interaction; detecting decays of relics from the very early Universe, such as cosmic strings or evaporating primordial black holes; or even using gamma-ray bursts to detect quantum gravity effects.

Video about GLAST:

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Pictures of earth from space

Many people who visit this site are searching for pictures of earth from space.

Well, obviously there is no better source for that than NASA. Because this is so hugely popular, NASA has made a own site for that under the slightly cryptic name of : http://earth.jsc.nasa.gov/sseop/efs/

Here you can find all sorts of images of our beautiful planet. And what is best, almost all material from NASA is public domain, that means you are allowed to use it for your own purposes as long as you state the source of the pictures.

Another excellent NASA source for pictures of earth and pictures of space exploration in genereal is

GRIN - GReat Images in Nasa

There you will find such treasures as this one and a lot more:

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