Einsteinium was discovered in December 1952 at Berkeley Laboratories (studying debris from a nuclear explosion) , University of California, USA by this group of researchers: Albert Ghiorso, Stanley G. Thompson, Gary H. Higgins, Glenn T. Seaborg, Martin H. Studier, P.R. Fields, Sherman M. Fried, H. Diamond, J.F. Mech, G.L. Pyle, John R. Huizenga, A. Hirsch, W.M. Manning, C.I. Browne, H. Louise Smith, R.W. Spence.
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Ejnar Hertzsprung and Henry Norris Russell, working independently, realized the relationship between a star's temperature and its brightness.
Together, in 1910, they formed what is now known as the Hertzsprung--Russell diagram or HR Diagram.
It's a scatter graph showing the relationship between a star's absolute magnitudes, their spectral types and temperatures.
dalton was into chemistry so he is a chemistry teacher
Ernest Shackleton reached the Antarctic in a three-masted barque named The Endurance.