Celestial mechanics: Analytical model reveals true cause of orbit bifurcations near Lagrange points

Advanced space travel relies on a fundamental understanding of the restricted three-body problem (RTBP), in which one of the ...

Day and night get equal billing as fall equinox arrives. Here are 3 things to know

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...