What is going on in NGC 891 [ http://antwrp.gsfc.nasa.gov/apod/ap970228.html ]? This galaxy appeared previously to be very similar to our own Milky Way Galaxy [ http://antwrp.gsfc.nasa.gov/apod/ap000130.html ]: a spiral galaxy [ http://www.astr.ua.edu/goodies/data_resources/galaxies.text ] seen nearly edge-on. However, recent [ http://www.cfht.hawaii.edu/HawaiianStarlight/English/Poster-NGC891.html ] high-resolution images [ http://antwrp.gsfc.nasa.gov/apod/ap990919.html ] of NGC 891 [ http://www.seds.org/messier/xtra/ngc/n0891.html ]'s dust show unusual filamentary patterns extending well away from its Galactic disk. This interstellar dust [ http://antwrp.gsfc.nasa.gov/apod/ap990509.html ] was probably thrown out of the galactic disk toward the halo [ http://www.eso.org/outreach/press-rel/pr-1999/pr-04-99.html ] by stellar supernovae explosions [ http://heasarc.gsfc.nasa.gov/docs/snr.html ]. Because dust is so fragile, its appearance after surviving disk expulsion can be very telling [ http://antwrp.gsfc.nasa.gov/apod/ap020703.html http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2000A%26A...362..138P ]. Newly discovered phenomena, however, sometimes appear so complex [ http://antwrp.gsfc.nasa.gov/apod/ap980310.html ] that more questions are raised than are answered.