If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a plane in the sky while ground-based telescopes meanwhile track how light from the star is shifted by the Doppler effect. Astronomers put these details together to infer the masses of the star and of the ‘blank’ space Science If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a plane in the sky while ground-based telescopes meanwhile track how light from the star is shifted by the Doppler effect. Astronomers put these details together to infer the masses of the star and of the ‘blank’ space Sci-Tech News | Latest Technological Developments | The Hindu
Scans of seemingly empty space reveal black holes not far from earth
