Travel and Maps
Poznań is easily accessible, it is located 300km from Warsaw and 300 km from Berlin.
Using Wikitravel you will find your best solution - how to get in to Poznań.
The conference will take place at the Collegium Minus - of the Adam Mickiewicz University house. Almost all accommodation places suggested by the LOC are within 5-10 minutes walk from this place, see the map below.
See Meteoroids2013 - Poznań - Poland bigger map.