PITTSBURGH – People have wanted to ask questions of Charles Darwin ever since “On the Origin of Species” was published in 1859.

Now, 157 years later, you have a chance to speak with the famous 19th century biologist, with one caveat: It’s a theatrical version of the man who first described evolutionary biology.

The Charles Darwin Synthetic Interview exhibit, formerly stationed at the Carnegie Science Center in Pittsburgh, has been transformed into an app.

The app by the same name represents a full version of the popular exhibit that fielded 126,000 questions in just its first months at the science center, where it remained for about six years.

The app and exhibit feature actor Randy Kovitz – who starred in “The Fault in Our Stars,” “Dawn of the Dead” and “Concussion” – as Darwin. He is dressed as the English scientist and answers 199 questions about his explorations, his childhood and family and the scientific principle of evolution, which continues to spur spirited discussion.

A mirror behind the synthetic Darwin provides commentary from religious, philosophical and scientific experts about the man and his science.

The full app casts $9.99 for the full 4 1/2 hours of content, with a free version available in which Darwin answers 24 of the most popular questions asked at the science center.

The app can be downloaded from the App Store, Google Play and Amazon Appstore, Pollock said.

The app earned a Parents’ Choice award as a “fascinating and bordering on eerie (but in a good way)” presentation that “lets viewers select questions to ask the pioneering scientist, including his thoughts about “the public response to his discovery.”