[1] In 2024, the song was certified platinum in the UK by the British Phonographic Industry (BPI).

[2] Heather Phares of AllMusic described "Space Song" as a moment where Beach House "conjures a feeling of intimacy surrounded by vastness", with "arpeggiated keyboards suggesting stars shooting through an endless sky".

In early 2021, the song began to be paired with an internet meme of Pedro Pascal laughing then crying.

[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.

In December 2022, the song saw a 41% increase in streams after being featured in the third episode of the Netflix original series Wednesday.