Complex sentence: Hitomi (spacecraft) was a Japanese satellite which was launched on 17 February 2016 with the microcalorimeter that failed on the Suzaku mission, along with hard-X-ray and soft-gamma instruments.
Split into simpler sentences: Hitomi (spacecraft) was a Japanese satellite which was launched on 17 February 2016. Aboard was the microcalorimeter that failed on the Suzaku mission, along with hard-X-ray and soft-gamma instruments.