The original British pressing excludes Howard and Blaikley's names in the liner notes, but they are included in the US pressing. The lead single from the album was "From Now On". The band premiered the album with a performance at the
London Planetarium. They performed a five-song set for the Dutch television broadcaster
TROS, broadcast on 14 May 1970. The set included: "Earthglow", "Weightless", "Changes", "Space Child", and "From Now On (Immortal Invisible)". Both the music and vocals were mimed, and it is the only known footage of Flaming Youth to exist. After the band split in early 1970, Collins went on to join the rock band
Genesis. The album has since been reissued several times. In 2023,
Ark 2 was reissued by the French label
Musea Records. This is a new remaster with the two bonus tracks "
Man, Woman and Child" and "
Drifting". The concept for the album and some of the songs were reworked into the rock opera for BBC1, co-written with
Melvyn Bragg,
Orion. ==Critical reception==