Has someone else attempted to do the same research as you before? If so why were they unsuccessful?

Question: Has someone else attempted to do the same research as you before? If so why were they unsuccessful?
- Keywords:
  attempted,
  research,
  unsuccessful
Asked by Isobel And Maddie - QUEEN to Peter on 9 Nov 2016.
- Peter Boorman answered on 9 Nov 2016:
  
  Similar things have and are being done to my work in the past! However, I currently use X-ray satellite data, which means that whenever a new telescope is launched into space, the data they collect can be better than previous X-ray satellites’ data.
  
  Peter

Question: Has someone else attempted to do the same research as you before? If so why were they unsuccessful?