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The focus shifted to reducing so-called systematics: repeatable errors that creep in because of faults in the design of experiments or equipment.

To subtract the galactic spectrum correctly, researchers have to calculate with high precision how their instrument and the environment around it respond to various radio wavelengths, also known as the experiment’s systematics.

Researchers noted that “future measurements are needed to clarify whether the observed discordances are due to undetected systematics, or to new physics or simply are a statistical fluctuation.”

To do so, however, radioastronomers must know exactly how their instrument responds to different wavelengths, also known as its systematics.

As at the Darwin Centre in London’s Natural History Museum, visitors can gaze through windows beyond the taxidermy to watch scientists studying taxonomy and systematics, biogeography and ecology, invasion biology, evolution, zooarchaeology, archaeobotany and more.