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  1. Hace 19 horas · The cosmic microwave background (CMB or CMBR) is microwave radiation that fills all space in the observable universe.It is a remnant that provides an important source of data on the primordial universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dark.However, a sufficiently sensitive radio telescope detects a faint background glow ...

  2. Hace 19 horas · Prevalence. About 0.17% to 0.89% (pre-pandemic) [9] Myalgic encephalomyelitis/chronic fatigue syndrome ( ME/CFS) is a serious long-term illness. People with ME/CFS experience a profound fatigue that does not go away with rest, sleep issues and problems with memory or concentration. They are able to do much less than before they became ill.