A number of ground-based radio telescopes and one in a terrestrial orbit with the apogee at about the Earth — Moon distance have been combined to make an interferometer that provides the angular resolution up to a few microarcseconds for exploring astronomical objects such as pulsars, star formation regions, and black holes. Black hole horizon physics, cosmic ray acceleration regions, and the hypothetical wormhole entrances are becoming accessible to study for the first time.

PACS: 01.30.Bb, 95.55.Jz, 95.85.Bh, 95.85.Fm, 97.60.Gb (all) DOI: 10.3367/UFNe.0179.200911e.1191 URL: https://ufn.ru/en/articles/2009/11/e/ 000285142100004 2-s2.0-77249144052 2009PhyU...52.1127K Citation: Kardashev N S "Radioastron: a radio telescope many times the size of Earth. Research program" Phys. Usp. 52 1127–1137 (2009) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Кардашев Н С «„Радиоастрон“ — радиотелескоп много больше Земли. Научная программа» УФН 179 1191–1202 (2009); DOI: 10.3367/UFNr.0179.200911e.1191