Table:
text: 1977 Pittsburgh Steelers season
Schedule
Schedule
Week Date_ Opponent Time_ET_ TV Result_ Record Game_Site
1 Monday September 19 San Francisco 49ers 9:00pm ABC W 27–0 1–0 Three Rivers Stadium
2 Sunday September 25 Oakland Raiders 4:00pm NBC L 16–7 1–1 Three Rivers Stadium
3 Sunday October 2 Cleveland Browns 1:00pm NBC W 28–14 2–1 Cleveland Municipal Stadium
4 Sunday October 9 Houston Oilers 2:00pm NBC L 27–10 2–2 Astrodome
5 Monday October 17 Cincinnati Bengals 1:00pm ABC W 20–14 3–2 Three Rivers Stadium
6 Sunday October 23 Houston Oilers 1:00pm NBC W 27–10 4–2 Three Rivers Stadium
7 Sunday October 30 Baltimore Colts 4:00pm NBC L 31–14 4–3 Memorial Stadium

Question: Name the Pittsburgh Steelers' opponent for the 1977 season at the Astrodome?