James Jeans
James Jeans (1877-1946) was an English mathematical physicist who made important contributions
to our initial understanding of stability in stars.
He also
doubted the nebular hypothesis, and proposed an alternative theory in which a star passing
close to the Sun pulled matter out of it by tidal interactions and this matter condensed to form
the planets. The craters Jeans on the Moon and Jeans on Mars are named in his honor.