To answer this question, we should know that: A second season aired from April 1 to June 17, 2017 on MBS and other television networks.
April 1 to June 17 , 2017
A second season aired from April 1 to June 17, 2017 on MBS and other television networks. Funimation and Crunchyroll streamed the second season on their respective websites, while Adult Swim aired a dubbed version. The opening theme song is "Opfert eure Herzen!" (心臓 を 捧げよ!, Shinzō o Sasageyo!, lit. "Dedicate Your Hearts!") by Linked Horizon and the ending theme song is "Yūgure no Tori" (夕暮れ の 鳥) by Shinsei Kamattechan.

Based on this passage, attack on titan anime season 2 release date?

The important part for answering this question is: The 2017 Central Mexico earthquake struck at 13: 14 CDT (18: 14 UTC) on 19 September 2017 with an estimated magnitude of M 7.1 and strong shaking for about 20 seconds.
13 : 14 CDT ( 18 : 14 UTC ) on 19 September 2017
The 2017 Central Mexico earthquake struck at 13: 14 CDT (18: 14 UTC) on 19 September 2017 with an estimated magnitude of M 7.1 and strong shaking for about 20 seconds. Its epicenter was about 55 km (34 mi) south of the city of Puebla. The earthquake caused damage in the Mexican states of Puebla and Morelos and in the Greater Mexico City area, including the collapse of more than 40 buildings. 370 people were killed by the earthquake and related building collapses, including 228 in Mexico City, and more than 6,000 were injured.

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This is the relevant information: Active star formation takes place in the disk (especially in the spiral arms, which represent areas of high density), but does not take place in the halo, as there is little gas cool enough to collapse into stars.
the disk ( especially in the spiral arms , which represent areas of high density )

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Although the disk contains dust that obscures the view in some wavelengths, the halo component does not. Active star formation takes place in the disk (especially in the spiral arms, which represent areas of high density), but does not take place in the halo, as there is little gas cool enough to collapse into stars. Open clusters are also located primarily in the disk.

Answer this question based on the passage: where does most star formation take place in the milky way?