Today, in just a few hours, a historical event will occur - the last launch of the shuttle.

Four astronauts will take part in the 12-day
STS-135 mission: spacecraft commander Chris Ferguson, pilot Doug Hurley and specialists from Sandy Magnus, Rex Walheim.
They will conduct a series of experiments as well as deliver a payload to the ISS, in particular the
Raphaello multi-purpose logistics module.You can watch the live broadcast here:
www.nasa.gov/multimedia/nasatvThere you can also find links to broadcasts for mobile devices.
Do not miss!
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ps All materials are taken from the site nasa.gov