Pitchfork labeled "Space Song" a "sweeping mid-album highlight".[2] Heather Phares of AllMusic described "Space Song" as a moment where Beach House "conjures a feeling of intimacy surrounded by vastness", with "arpeggiatedkeyboards suggesting stars shooting through an endless sky".[3]
In early 2021, the song began to be paired with an internet meme of Pedro Pascal laughing then crying. As of September 2022, the song has been used in over 200,000 videos on the platform.[6][7] In an interview with Pitchfork, Beach House member Victoria Legrand said of the success of "Space Song" on TikTok:[8]
I don't need to analyze it because I'm grateful for it. I don’t think it's just that song, but if that is the gateway, then I'm happy about it. We both feel lucky that younger people keep discovering us and we're able to keep making records.
In December 2022, the song saw a 41% increase in streams after being featured in the third episode of the Netflix original series Wednesday.[9] The song is featured in the movie Nadia, Butterfly as part of its soundtrack.[10]