Iron and nickel atoms in cometary atmospheres even far from the Sun

28. 03 2023

Oumuamua

Acceleration of 1I/Oumuamua from radiolytically produced H2 in H2O ice

29. 04 2022

Comets

Exocomets size distribution in the β Pictoris planetary system

14. 04 2022

Oort cloud

Massive comet from the edge of solar system is showing the first signs of activity

Unusually big comet C/2014 UN271 (also called Bernardinelli-Bernstein) is coming to the inner solar system from the Oort cloud. Analysis of its orbit shows that the perihelion (furthest point from the Sun) could be as far as 7 144 AU. In 2031 it should come at the closest point to the Sun - to about 11 AU. Astronomers currently estimate size of C/2014 UN271 to be about 200 km across.

19. 03 2022

Comet 67P/C-G

Dual storage and release of molecular oxygen in comet 67P/Churyumov–Gerasimenko