MCQOPTIONS
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| 1. |
Which journal has published the discovery of 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth? |
| A. | Astroparticle Physics |
| B. | The Astrophysical Journal |
| C. | Acta Astronomica |
| D. | International Journal of Cosmology, Astronomy and Astrophysics |
| E. | Connaissance des Temps |
| Answer» C. Acta Astronomica | |