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   71076
   Because of its proximity, SN1987A in the LMC is providing us with a
   unique opportunity to study an SNR in its very early phase of
   evolution. Soft X-rays from the interaction between the SN ejecta and
   the CSM reveales the CSM distribution and the late evolution history of
   the progenitor star. Recent optical brightening of part of the ring
   around the SN observed by the HST is implying that the collision is
   partially starting, and X-ray observations are important to detect the
   X-ray brightening. Search for the putative pulsar will be carried out
   as well.
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