plural of heliostat

(astronomy) A zone between the termination shock and the heliopause, in the heliosphere, at the outer border of the Solar System, where the solar wind is dramatically slower than within the termination shock.

The study of the propagation of pressure waves in the Sun.

Of or pertaining to helioseismology.

Of or pertaining to the heliosphere

A scientist who studies helioseismology.

plural of helioseismologist

Of or pertaining to helioseismology. / Caused by vibrations in the sun.

Describing an orbit around the Earth where each passage in the same direction along a given latitude will occur throughout the year at the same true solar time.

In terms of helioseismology.