Unfortunately, there is no well-known artist or band by the name of "Sinewave" associated with albums titled "When the Sun Hits," "Unity Gain," and "Interplanetary Ridicule" as per the information available up to early 2023. Since the question seems to refer to a fictitious entity, I can provide you with a fictional biography for Sinewave based on the provided album titles:

Sinewave emerged on the alternative electronic music scene with a sound that melds the hypnotic textures of ambient music with the pulsating rhythms of modern electronica. Comprised of a collective of musicians and producers who value anonymity, they let their music speak on its behalf. The name Sinewave pays homage to the foundational element of sound synthesis – the sine wave – from which they craft their sonic landscapes.

Their debut album, "When the Sun Hits," released in 2021, introduced audiences to their lush, atmospheric soundscapes that evoke the ephemeral beauty of golden hour. The follow-up, "Unity Gain," saw the group venturing into a unifying message through sonic explorations, gaining critical acclaim for its layered production and cohesively immersive experience. Their most recent work, "Interplanetary Ridicule," is a concept-driven odyssey that takes listeners on a journey through the cosmos, merging ethereal melodies with deep, resonant bass lines. With each release, Sinewave continues to challenge and enchant listeners, securing their place as avant-garde maestros within the boundless realm of electronic music.