 If you liked
Koisuru Asteroid
|
 ...then you might like
Kimi wa Houkago Insomnia
|
Although for different reasons, both feature the 2 main characters attempting to revive and keep alive a defunct astronomy club. Both series feature a significant amount of technical jargon related to astronomy. And, of course, the main characters in both become romantically involved with each other, though it's more nuanced and platonic in Koisuru Asteroid.
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Recommended by Quintessence
If you want vibes about stargizing, this anime is for you
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Recommended by harukaze27
Two anime that made me fall in love with the stars all over again. There's just something so charming about people falling in love with the sky, and forging bonds over it. Though they are definitely different anime, the love of the sky shines through in both, and both left me with a similar feeling.
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Recommended by cryoluminescent