A diagram used to plot trajectories in space-time near a black hole. The vertical and horizontal axes are two complicated functions of time and distance from the black hole. Lines of constant time rad
iate from the origin of the diagram, with steeper slopes corresponding to later times. Lines of constant distance are hyperbolas, lines of constant time pass through the origin; photons always travel along diagonal lines at ±45° to the vertical. The trajectory of an object falling into the black hole is shown as a curving line moving upward on the diagram at less than 45° to the vertical.
Kronian Solar Magnetospheric - A coordinatesystem related to Saturn where the X axis is anti-sunward, Z axis isnorthward in a plane containing the X axis and the Kronian dipole axis.
An orange-red star of spectral type K with a surface temperature of about 3600-5000 K. The spectra of K stars are dominated by the H and K lines of calcium and lines of neutral iron and titanium, with
molecular bands due to cyanogen (CN) and titanium dioxide (TiO). Examples are Arcturus and Aldebaran.