Armagh Observatory / ROSAT observatory / Tufts University / Harvard University / /
IndustryTerm
inverse-square law forces / keV energy band / universal law / nuclear energy / radio energy / hot intergalactic gas / hot diffuse intergalactic gas / hot gas / dense interstellar gas / gravitational potential energy / energy / astronomical systems / /
MusicGroup
the Sun / Moon / Earth / the Moon / /
NaturalFeature
Gulf of Mexico / Hven / /
Organization
Northern Ireland Department of Culture / Arts and Leisure / Harvard University / Royal Astronomical Society / National Aeronautics and Space Administration / Tufts University / Committee on the Public Understanding of Science / Education Committee / /
Person
Tycho Brahe / Robert Hooke / Isaac Newton / Edmund Halley / Paul Johnson / Johannes Kepler / /
Position
distinguished mathematician / General / /
Product
Comet / /
PublishedMedium
The Tides daily / the Public Understanding of Science / /
Key F Tycho Brahe and Johannes Kepler T Kepler 1: The orbits of the planets are ellipses with