Each asteroid is plotted using actual documented discovery dates taken from the Minor Planet Center and the Lowell Observatory, major astronomy centers that host large sets of publicly available data.

FORBES

More of Slipher anon, but let me start by sharing this little piece of history (photo above), which I held in my hands during a tour of the Lowell Observatory archives.

FORBES: Flagstaff's Role In The Expanding Universe

The recent conference I attended at the Lowell Observatory in Flagstaff to celebrate the 100th anniversary of his first measured Doppler shift, was a great opportunity to learn more about him.

FORBES: A Giant In Hubble's Shadow