Noun
space velocity (plural space velocities)
(astronomy) The velocity of a star relative to the Sun
As stars move through an arm, the space velocity of each stellar system is modified by the gravitational force of the higher density. Source: Internet
The space velocity relative to the Sun is about main. Source: Internet
This yields a 1911 space velocity of km/s. Source: Internet
Using the two measurements together yielded a space velocity of about 100 km/s, moving towards a point about 12 degrees west of Orion 's belt. Source: Internet