  We investigate possible reasons for the absence of historical records of the
supernova of 1054 in Europe. At the same time, we search for the new evidences
as well. We establish that the previously acclaimed 'Arabic' records from ibn
Butlan originate from Europe. As one of the most prominent scientists of the
era, he was in Constantinople at the time of the supernova and actively
participated in the medieval Church feud known as the Great Schism. Next, we
reconstruct the European sky at the time of the event and find that the 'new
star' (SN 1054) was in the west while the planet Venus was on the opposite side
of the sky (in the east) with the Sun sited directly between these two equally
bright objects, as documented in East-Asian records.
