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Macquart et al. last week solved the case of the missing baryons (or oridinary matter), based on observations of Fast Radio Bursts (FRBs) detected with ASKAP. The ASKAP Commensal Real-time ASKAP Fast Transients (CRAFT) survey team developed a mode capable of localizing FRBs with sufficient accuracy to identify their host galaxies. Follow-up observations with optical telescopes enabled the redshifts, and hence distances, to the galaxies to measured. Comparison with the Dispersion Measure of the FRBs -- the spread in frequency of the burst, which depends upon the density of matter between the FRB and the Earth -- allowed the missing matter to be detected for the first time. The image above is a still from an Australian Academy of Science video explaining the result. The results are published in the journal Nature.