Back to Main List
Back to Book List

Notes and Reflections on Books and Media

by Hannah Leitheiser

Polaris

Practical Talks by an Astronomer

Harold Jacoby

1894

Link

2017-04-19

"And now we come to the most astonishing thing of all [About polaris]. How comes it that the average rate of approach of the "four-day system," as a whole, changed between 1896 and 1899? There must be some other great centre of attraction, some cosmic giant, holding the visible double pole-star under its control. Thus, that which we see, and call the pole-star, is in reality threading its path about the third and greatest member of the system, itself situated in space, we know not where." -' Practical talks by an astronomer, 1894

Turns out it is a three star system but the Third is not as large as predicted.