Cometary knots, also referred as globules, are structures observed in several nearby planetary nebulae (PNe), including the Helix Nebula (NGC 7293), the...
9 KB (1,111 words) - 17:16, 29 December 2023
Helix Nebula (section Knots)
nebula. The rotational-vibrational temperature ranges from 1,800 K in a cometary knot located in the inner region of the nebula are about 2.5'(arcmin) from...
14 KB (1,359 words) - 17:56, 25 June 2024
software Cometary knots in planetary nebulae Knott (disambiguation) Celtic knot, a decorative graphic representation of a knot Gordian Knot, a very complex...
2 KB (351 words) - 07:15, 25 May 2023
Emerson Barnard, who described it as "a new and comparatively bright round cometary nebula close south and following Merope (23 Tau) ... about 30" in diameter...
7 KB (682 words) - 19:36, 28 December 2023
the star condense at about 85 R☉ from the surface, and are visible as cometary knots when they lie to side of the star. There is also a 2 M☉ shell about...
21 KB (2,228 words) - 01:37, 19 May 2024
M.J. & Zheng, J.Q. (2001). "Periodic variation of Oort Cloud flux and cometary impacts on the Earth and Jupiter". Monthly Notices of the Royal Astronomical...
109 KB (13,080 words) - 03:58, 17 July 2024
came within 4 million km (2.5 million mi) of Venus, the closest-known cometary approach to Venus. The comet was discovered by G. J. Leonard at the Mount...
14 KB (1,404 words) - 14:56, 27 January 2024
icq.eps.harvard.edu. November 17, 2013. Richter, N. (January 1960). "II Cometary physics and the comets Arend-Roland and Mrkos". Vistas in Astronomy. 3...
6 KB (623 words) - 19:05, 23 February 2023
Cassini-Huygens, p. 10 David Jewitt (2002). "From Kuiper Belt Object to Cometary Nucleus: The Missing Ultrared Matter". The Astronomical Journal. 123 (2):...
82 KB (10,146 words) - 15:54, 15 May 2024