Pertaining to astronomy
Of a magnitude suggesting distances in astronomy
The odds against the coincidence were astronomical, until I considered the facts.
He also compiled astronomical tables and a treatise on the quadrant.
Gregory was one of the founders of the Royal Astronomical Society.
He wrote An Astronomical Description of the late Comet (1619); Canicularia (1648); and translated Proclus' De Sphaera, and Ptolemy's De Planetarum Hypothesibus (1620).
Mr Charles Green was commissioned to conduct the astronomical observations, and Sir Joseph Banks and Dr Solander were appointed botanists to the expedition.