The structure of magnetic field and the distribution of dust in space is revealed by high-precision polarisation measurements. The figure shows the degree and direction of polarisation of more than ...

As a result, the most accurate space maps are those that rely on orbital observations backed by Earth-based telescopes, whose radio data enable the coordinates to be corrected. An active galactic ...

“The definition of the Galactic coordinate system was announced by the IAU Sub-Commission 33b on behalf of the IAU in 1958. An unrigorous transformation was adopted by the Hipparcos group to transform ...

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