Inspired by this astropixie post, I present to you one of the most recognizably phallic objects you’ll see in astrophysics:
Well, it’s actually a simulation of a
jet [which] delivers its thrust in a narrow solid angle (1).
I should also mention that this type of astronomical object is thought to originate in the vicinity of a black hole.
(1) Meier, David L.; Koide, Shinji; Uchida, Yutaka. Science, Volume 291, Issue 5501, pp. 84-92 (2001).