Answer by taking a quote from the following article:

Big Star was an American rock band formed in Memphis, Tennessee, in 1971 by Alex Chilton, Chris Bell, Jody Stephens, and Andy Hummel. The group broke up in 1974, and reorganized with a new line-up nearly 20 years later. In its first era, the band's musical style drew on the vocal harmonies of the Beatles, as well as the swaggering rhythms of the Rolling Stones and the jangling guitars of the Byrds. To the resulting power pop, Big Star added dark, existential themes, and produced a style that foreshadowed the alternative rock of the 1980s and 1990s.

Big Star returned in 1993 with a new line-up when guitarist Jon Auer and bassist Ken Stringfellow joined Chilton and Stephens. Auer and Stringfellow remained members of the Posies, founded by the pair in 1986. Stringfellow is also known for his work with R.E.M. and the Minus 5. Hummel elected not to participate. First-era material dominated Big Star's performances, with the occasional addition of a song from the 2005 album In Space; Stringfellow recalled that during the 1990s, "We were working out the set list and we went to this little cafe. Little did I know we'd be playing that set for the next ten years". The resurrected band made its debut at the 1993 University of Missouri spring music festival. A recording of the performance was issued on CD by Zoo Records as Columbia: Live at Missouri University. The concert was followed by tours of Europe and Japan, as well as an appearance on The Tonight Show.  Big Star's first post-reunion studio recording was the song "Hot Thing", recorded in the mid-1990s for the Big Star tribute album Big Star, Small . As with their prior studio release, however, the tribute album was delayed for years due to its record company going under. Originally scheduled for a 1998 release on Ignition Records, the album was eventually released in 2006 on Koch Records.  In Space was released on September 27, 2005 on the Rykodisc label. Recorded during 2004, the album consisted of new material mostly co-written by Chilton, Stephens, Auer, and Stringfellow. Reviewing In Space, Rolling Stone's David Fricke first pointed out that the context of the release was now "a world expecting that American Beatles ideal all over again" from a band that "achieved its power-pop perfection when no one else was looking." In Fricke's estimation, this seemingly unrealistic expectation was met in part: "It's here - in the jangly longing and ice-wall harmonies of 'Lady Sweet'" - however, Fricke found that the successful songs were interleaved with "the eccentric R&B and demo-quality glam rock that have made Chilton's solo records a mixed blessing," and that "'A Whole New Thing' starts out like old T.Rex, then goes nowhere special." Warming nevertheless to "the rough sunshine" of "Best Chance", Fricke concluded, "In Space is no #1 Record, but at its brightest, it is Big Star in every way."  The band appeared at San Francisco's Fillmore Auditorium on October 20, 2007. San Francisco-based band Oranger, performed as opening act. Big Star performed at the 2008 Rhythm Festival, staged from August 29-31 in Bedfordshire, UK. On June 16, 2009, the #1 Record/Radio City double album was reissued in remastered form. The same month, it was announced that a film of Big Star's history, based on biographer Rob Jovanovic's book Big Star: The Story of Rock's Forgotten Band, was in pre-production. On July 1, 2009, Big Star performed at a concert in Hyde Park, London, UK. On September 15, 2009, Rhino Records issued a four-CD box set containing 98 recordings made between 1968 and 1975. Keep an Eye on the Sky included live and demo versions of Big Star songs, solo work, and material from Bell's earlier bands Rock City and Icewater. On November 18, 2009, the band performed at the Brooklyn Masonic Temple in New York City.

Were any of the other original members mentioned?
Hummel elected not to participate.