ARA for the curious visitor
Why do we need such a big detector? Neutrinos usually pass smoothly through matter without stopping or interacting. This "low cross section" makes them an excellent messenger from deep space, but also makes their detection very rare. Therefore a huge, transparent and radio quite detector is needed.
Does big mean expensive?
What can we learn from ARA ?
Do Neutrinos really exist?
Why the South Pole?
Where can I read more?