Measuring the equation of state of dark energy is one of the biggest efforts in observational cosmology today. (sciencedaily.com)
«I'd much rather spend my time working on the really important questions observational cosmology has been handing us about dark matter and dark energy. (discovermagazine.com)
Unless you've been living under a particularly thick and insulating rock you'll know that in recent months the world of experimental cosmology (what would have previously been called observational cosmology, or just plain old astronomy) has been on tenterhooks waiting to see -LSB-...] (scientificamerican.com)