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As the decay of the nucleus into fragments is not common in comets, it is observed very rarely. About 40 comets have been observed after their splitting in the last 150 years. The partial fragmentation of the cometary nucleus or its complete disintegration allows us to study the process regarding nucleus mass loss, internal structure, and composition of the nucleus. More...

In the framework of the modern cosmological paradigm, the great majority of galaxies have been formed during the first 1-2 Gyr after the Big Bang, which occured 13.7 Gyr ago. Initially, the galaxies were purely gas objects with the so-called 'primordial' element composition, comprised of H and He (with mass ratio of ~4:1). More...

The study of the optical, physical, and chemical properties of dust from small bodies in the Solar system helps us to understand the main mechanisms of their formation and evolution in the protosolar nebula. More...

Active galactic nuclei (AGN) are unresolvable with modern optical telescopes since the apparent angular size of the central parsec is <<0.1 arcsec even for the closest active galaxies. This leads to difficulties with methods for estimating distances within the AGN. More...

Archive

Update

Telescopes:
19.11.21 The half-yearly BTA observation reports
The half-yearly RATAN-600 observation reports
27.12.21 A new schedule of the Zeiss-1000 observations (the first half of 2022)
27.12.21 A new schedule of the RATAN-600 observations (the first half of 2022)
16.12.21 A new schedule of the BTA observations (the first half of 2022)
Science:
21.12.21 Proposed Scientific Achievements 2021
Publications:
21.01.22 Astrophysical Bulletin, vol. 77, number 1 is published.
Service:
26.01.22 Announce, news, discussion (restricted)
BTA-6m


RATAN-600


Zeiss-1000


Sun monitoring




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Last update: 21/01/2022