This astronomer's constants are two parameters to describe the major features of our Galaxy's differential rotation in the Sun's neighborhood, and he proposed that the Galaxy had missing mass.
This astronomer's constants are two parameters to describe the major features of our Galaxy's differential rotation in the Sun's neighborhood, and he proposed that the Galaxy had missing mass. His establishment of the radio observatories at Dwingeloo and Westerbork put the Netherlands at the forefront of radioastronomy, in 1927 he calculated the mass and size of the Milky Way and the Sun's distance from its center, and in the 1950s led the team that mapped the spiral structure of the Milky Way, but is best-known for a proposal based on the observation of the highly elliptical orbits of comets. FTP, who was this Dutct astronomer for whom a hypothetical Cloud of comets is named?
This astronomer's constants are two parameters to describe the major features of our Galaxy's differential rotation in the Sun's neighborhood, and he proposed that the Galaxy had missing mass.
Jan Oort