Richard Hatch who is famous for his roles in Battlestar Galactica first in the original as  Captain Apollo And then later he returned to the reboot as Tom Zarek passed away at the age of 71 after his battle with pancreatic cancer. A statement from his family of his death was posted on his website along with a link for fans to send condolences and share memories.
Personally it has never been easy to hear of the death of someone you grew up with. Even if that person was an actor who came into your living room once a week on the television. The memories of sitting and watching Battlestar Galactica as a child with my father who like me liked a good sci fi movie or series will always stick with me. So for that I will have to say thanks for the memories may you Rest in Peace .
The following statement comes from RichardHatch.com

HATCH FAMILY STATEMENT
February 7, 2017 — Paul Hatch, on behalf of the Hatch family and friends, is sad to confirm the passing of his beloved father Richard Lawrence Hatch, who passed away in Los Angeles, California this afternoon.

He died peacefully with his family and friends at his side after a battle with pancreatic cancer.

Richard was well known to legions of fans for his roles as Captain Apollo in the original Battlestar Galactica television series and also as Tom Zarek in the 2003 remake of the series.

Born May 21, 1945 in Santa Monica, Richard was an actor, writer, and producer best known for his role as Captain Apollo in the original Battlestar Galactica television series, and also as Tom Zarek in the 2003 remake of Battlestar Galactica.

After beginning his career in Off Broadway theatre, in 1970 he joined the cast of All My Children and then went on to become a fixture as a guest star on numerous hit TV series and movie for television, eventually replacing Michael Douglas as Karl Malden‘s partner in the Streets of San Francisco.

In 1978 his starring role in Battlestar Galactica brought him worldwide recognition as well as a Golden Globe nomination.

In spite of significant roles in other series and motion pictures over the following decades, his connection with the original Battlestar as well as the remake, created an international following among science fiction fans. While continuing his acting career Richard was a popular figure at Comic Book conventions, science fiction forums and even hosted his own cruise ship events.

Further information on memorial services and tributes can be found here at.

For more on Richard Hatch’s career and a short bio see Wikipedia