Compilation of known QSOs for the Gaia mission

Quasars are essential for astrometric in the sense that they are spatial stationary because of their large distance from the Sun. The European Space Agency (ESA) space...类星体（Quasars）在天体测量领域中至关重要，这是由于它们与太阳的距离极为遥远，故而在空间上近乎静止。欧洲空间局（European Space Agency, ESA）的空间...