FIGURE 2.6 Top: Schematic of the evolution from left to right of an inflationary universe to recombination to reionization and first star/galaxy formation to today’s Earth-bound telescopes. Overlaid in tiles are predicted 21-cm signals from the Murchison Widefield Array. SOURCE: S. Furlanetto, University of California, Los Angeles; J. Lazio, JPL; and C. Lonsdale, MIT-Haystack. Bottom: The same signals detected at 150 MHz in an all-sky map from the Precision Array to Probe the Epoch of Reionization. SOURCE: A.R. Parsons, D.C. Backer, R.F. Bradley, J.E. Aguirre, E.E. Benoit, C.L. Carilli, G.S. Foster, N.E. Gugliucci, D. Herne, D.C. Jacobs, M.J. Lynch, et al., The precision array for probing the epoch of re-ionization: Eight station results, Astronomical Journal 139(4):1468-1480, 2010.