|Stage Name Sort descending||Birth Name||Position||Birthday||Age||Height||Star Sign||C Y||BT|
|Cha Eunwoo 차은우||Lee Dongmin||Visual||21||183 cm or 6'||Aries||Ox||B|
|Jin Jin 진진||Park Jin Woo||Leader, Dancer, Rapper||22||174 cm or 5'8½"||Pisces||Rat||A|
|MJ 엠제이||Kim Myungjun||Vocal||24||175 cm or 5'9"||Pisces||Dog||O|
|Moonbin 문빈||Moon Bin||Dancer||20||183 cm or 6'||Aquarius||Ox||B|
|Rocky 라키||Park Minhyuk||Dancer, Rapper||19||176 cm or 5'9½"||Pisces||Hare|
|Sanha 산하||Yoon Sanha||Vocal, Maknae||18||181 cm or 5'11½"||Aries||Dragon||AB|
Astro 아스트로 is a male idol group from Fantagio Entertainment. They are the agency hoobae group to female idol group Hello Venus, who debuted four years before Astro, and the male idol group 5urprise, who debuted two years before.
Fantagio announced Astro’s official fanclub name, AROHA, immediately at debut. It is meant to allude to the phrase “Astro hearts all fans.” Aroha also means “love” in Māori.
The members started out as trainees under Fantagio iTeen, a rookie talent development program under Fantagio Entertainment, and were known as iTeen Boys. When Fantagio released debut information about the new group announced the group’s new permanent name, Astro.
Following the same technique Fantagio used to form 5urprise, ASTRO starred in a web drama series, To Be Continued, in August 2015. The members starred as themselves along with Kim Saeron, 5urprise member Seo Kangjoon, and Hello Venus.
In January 2016, Astro starred in their own reality show, Astro OK! Ready, which was aired on MBC Every1 at 7PM KST. The group also made an appearance on the KBS variety show Star Golden Bell.
Leading up to their official debut Astro held a nationwide showcase tour called "Meet U Project". The group toured all over South Korea and held twenty shows and two fan meetings.
Astro’s debut album Spring Up was released on February 23, 2016 with the single "Hide & Seek." They also announced their official fanclub name, Aroha, which is an abbreviation for Astro Hearts All Fans. Aroha also means "love" in Māori. Within a week of its release, Spring Up had landed at #6 on the Billboard World Albums Chart in the United States, as well as #4 on Gaon Music Chart. On February 25, the group released the music video for "Cat's Eye," containing images from their webseries "To Be Continued." In March of the same year, the group was the only Korean act invited to the LeTV Entertainment Awards in China.
Fantagio released a comeback photo of Astro on June 16, 2016. Their second mini album, Summer Vibes, was launched on July 1, along with the title track "Breathless." It landed at #6 on the Billboard World Albums Chart, the highest-charting Kpop album for that week, and "Breathless" landed at #21 on the Billboard World Digital Songs Chart.
Astro performed at Staples Center in Los Angeles on July 31 for KCON 2016. They held their first solo concert, only 6 months after their debut, on August 27–28, 2016 at the KEPCO Art Center in Seoul. They also held their first Asia showcase in Bangkok, Thailand on October 29.
On October 31, Fantagio released Astro's comeback photos announcing their third extended play, Autumn Story, set to be released on November 10, 2016.
On March 3, 2016, Astro signed a contract with uniform brand PL School Wear.
In April 2016, Astro was chosen as models for cosmetics brand LOVLUV. The cosmetic band explained: "ASTRO is well-prepared as they have trained for a long 7 years. Coincidentally, 'LOVLUV' is also a brand that took 7 years in preparation. They increased their value through thorough preparation."