Title: Astrodome
Content: The first home run in the Astrodome was hit by Mickey Mantle off of pitcher Turk Farrell on April 9, 1965, in an exhibition game between the Astros and Yankees. The first official home run was hit by Dick Allen of the Philadelphia Phillies in a game on April 12 of that year—a 2–0 Astros loss. ; Lindsey Nelson, an announcer for the visiting New York Mets, broadcast a game on April 28, 1965, while perched in a gondola suspended from the roof above second base. ; At the beginning of the 1980 playoff series between the Astros and the Phillies, KILT AM radio announced that the Astros' number one fan "Astroman" would 
Title: Astrodome
Content:  On Opening Day, April 9, 1965, a sold-out crowd of 47,879 watched an exhibition game between the Houston Astros and the New York Yankees. President Lyndon B. Johnson and his wife Lady Bird were in attendance, as well as Texas Governor John Connally and Houston Mayor Louie Welch. Governor Connally tossed out the first ball for the first game ever played indoors. Dick "Turk" Farrell of the Astros threw the first pitch. Mickey Mantle had both the first hit (a single) and the first home run in the Astrodome. The Astros beat the Yankees that night, 2–1. President Johnson stopped at the Astrodome that evening en route to his home in Johnson City and paid his respects to baseball and Astros president Roy 
Title: 1965 New York Yankees season
Content: April 9, 1965: The Houston Colt .45s became the Houston Astros and inaugurated indoor baseball in the Astrodome with a 2–1 exhibition win over the Yankees. In this game, Mickey Mantle hit the first home run in the history of the Astrodome. 
Title: Astrodome
Content:  The NRG Astrodome, also known as the Houston Astrodome or simply the Astrodome, is the world's first multi-purpose, domed sports stadium, located in Houston, Texas. It was financed and assisted in development by Roy Hofheinz, mayor of Houston and known for pioneering modern stadiums. Construction on the stadium began in 1962, and it officially opened in 1965. It served as home to the Houston Astros of Major League Baseball (MLB) from its opening until 1999, and the home to the Houston Oilers of the National Football League (NFL) from 1968 until 1996, and also the part-time home of the Houston Rockets of the National Basketball Association (NBA) from 1971 until 1975. Additionally, the Astrodome was the primary venue of the Houston Livestock Show 
Title: 2019 Houston Astros season
Content:  On June 9, Yordan Álvarez made his major league debut versus the Baltimore Orioles. He went 1-for-3 with a two-run home run in his debut. The following game, Álvarez again homered, this time versus Matt Albers of the Milwaukee Brewers. He became the first Astro to homer in both of his first two games. Álvarez became the fourth player in MLB history to hit four home runs in his first five career games when he homered off Clayton Richard of the Toronto Blue Jays, joining Trevor Story, Yasiel Puig and Mike Jacobs. On June 23, Álvarez hit a 2-run home run for his seventh home run of the season in only 12 games, establishing an Astros franchise record. He also became the first player in MLB history to drive in 16 runs in his first 12 games.
Title: 2021 Houston Astros season
Content:  multiple home runs in their first major league start. Yordan Álvarez added two home runs, including his 30th of the season; at the age of 24, he is the second Astro to hit 30 home runs in a season at that age after Alex Bregman, who hit 31 in 2018. In the September 17 contest versus the Arizona Diamondbacks, José Altuve homered off Madison Bumgarner at Minute Maid Park to collect his 849th career hit in the stadium. The hit tied him with Lance Berkman for most by an Astro in the venue. He then passed Berkman the next night with a double. On 
Title: History of the Houston Astros
Content:  June 18, Fathers Day, against the Braves. It was the first no hit, shut out, pitched in team history and in the Astrodome. Jimmy Wynn also provided some enthusiasm in 1967. The 5 ft 9 in Wynn was becoming known not only for how often he hit home runs, but for the distance of the home runs. Wynn set club records with 37 home runs, and 107 RBIs He also had a pinch hit single in the All-Star game that year; another Astros first. As the season came to a close the Astros found themselves once again in ninth place 
Title: 2019 Houston Astros season
Content:  with eight RBIs for the club record in one game. The Astros set a franchise record with 23 runs scored on August 10 at Camden Yards versus the Baltimore Orioles, In the 23–2 win, they also set the franchise record for extra base hits with 13, including six home runs. Three of the home runs came via rookie Yordan Álvarez, including a grand slam. With a career-high seven runs driven in, his total stood at 51 to establish the major league record for the first 45 games. On August 15, Carlos Correa hit his 100th career home runs in 7–6 loss to the Athletics at Oakland Coliseum. He joined Cal Ripken Jr. and Alex Rodriguez as the only major league shortstops to hit 100 career home runs before their 25th birthday. He was also the youngest Astro to hit the milestone home run.
Title: History of the Houston Astros
Content:  serious threat in the National League West. The year started with a bang when Doug Rader clobbered a shot into the upper reserve (gold) seats in left field during an exhibition game on April 3. Nine days later Jimmy Wynn knocked one into the purple seats (just below the gold) proving that the unreachable area of the dome was reachable. The seats were repainted marking this feat. No other Astro ever hit a home run into that part of the Astrodome. In June, 19-year-old César Cedeño was called up and immediately showed signs of being a superstar. The Dominican 
Title: George Springer
Content:  On the Astros' Opening Day at Globe Life Park in Arlington, Springer led off with a home run against Texas Rangers pitcher Cole Hamels, becoming the first MLB player to lead off with a home run in consecutive Opening Days. He had homered off Mariners pitcher Felix Hernandez in the first inning of Opening Day 2017 at Minute Maid Park. On May 7, 2018, Springer homered versus the Oakland Athletics and became the first player in Astros franchise history to record six hits in a nine-inning game. Joe Morgan had six hits in a twelve-inning game for the Astros on June 8, 1965. Springer made his second All-Star appearance in as many seasons, joining five other Astros players and manager A. J. Hinch on the American League All-Star team. 

Question: who hit the first home run in the houston astrodome?
Answer: Mickey Mantle.