1. The Battle of Gonzales: On October 27, 1835, Texas revolutionaries and Mexican troops clashed in the Battle of Gonzales, marking the first military engagement of the Texas Revolution. The battle was sparked by a dispute over a cannon which had been loaned to the settlers by the Mexican government.

2. Texas Ranger Museum: The Texas Ranger Hall of Fame and Museum opened in Waco, Texas, on October 27, 1968. The museum showcases the history and accomplishments of the Texas Rangers, who have played a crucial role in law enforcement and state history.

3. First Texas Woman Governor: On October 27, 1924, Miriam "Ma" Ferguson became the first woman governor of Texas. She served two non-consecutive terms, from 1925 to 1927 and from 1933 to 1935, and was known for her progressive policies and support of education and women's rights.

4. NASA's Manned Spacecraft Center: On October 27, 1961, President John F. Kennedy dedicated the Manned Spacecraft Center in Houston, Texas, which would later become the Johnson Space Center. The center played a vital role in the Apollo space program and the development of the Space Shuttle.

5. Enron Scandal: On October 27, 2004, former Enron CEO Ken Lay was indicted on multiple charges related to the company's accounting scandal, which led to its fall and became one of the biggest corporate scandals in history. Lay was later convicted and sentenced to prison, but died before serving time.