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ORIGIN is a proposal for the M3 mission call of ESA aimed at the study ofmetal creation from the epoch of cosmic dawn. Using high-spectral resolution inthe soft X-ray band, ORIGIN will be able to identify the physical conditions ofall abundant elements between C and Ni to red-shifts of z=10, and beyond. Themission will answer questions such as: When were the first metals created? Howdoes the cosmic metal content evolve? Where do most of the metals reside in theUniverse? What is the role of metals in structure formation and evolution? Toreach out to the early Universe ORIGIN will use Gamma-Ray Bursts (GRBs) tostudy their local environments in their host galaxies. This requires thecapability to slew the satellite in less than a minute to the GRB location. Bystudying the chemical composition and properties of clusters of galaxies we canextend the range of exploration to lower redshifts (z ~ 0.2). For this task weneed a high-resolution spectral imaging instrument with a large field of view.Using the same instrument, we can also study the so far only partially detectedbaryons in the Warm-Hot Intergalactic Medium (WHIM). The less dense part of theWHIM will be studied using absorption lines at low redshift in the spectra forGRBs.

ORIGIN: Metal Creation and Evolution from the Cosmic Dawn