Reasons to Believe

Dr. Jeff Zweerink
Research Scholar

Since my earliest memories, science and the Christian faith have featured prominently in my life - but I struggled when my scientific studies seemed to collide with my early biblical training. My first contact with RTB came when I heard Hugh Ross speak at Iowa State University. It was the first time I realized it was possible to do professional work incorporating both my love of science and my desire to serve God. I knew RTB's ministry was something I was called to be a part of.

While many Christians and non-Christians see the two as in perpetual conflict, I find they integrate well. They operate by the same principles and are committed to discovering foundational truths. My passion at RTB is helping Christians see how powerful a tool science is to declare God's glory and helping scientists understand how the established scientific discoveries demonstrate the legitimacy and rationality of the Christian faith.

While many Christians and non-Christians see the two as in perpetual conflict, I find they integrate well.

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Astrophysicist Jeff Zweerink's involvement in science apologetics grows from an enthusiasm for helping others bridge the perceived science-faith gap. As research scholar and executive director of online learning at Reasons to Believe (RTB), Jeff focuses on encouraging people of all backgrounds to consider how Christianity and science connect. Jeff earned a BS in physics and a PhD in astrophysics with a focus on gamma rays from Iowa State University. He worked at Loras College in Dubuque, Iowa, teaching as well as running the planetarium, until postdoctoral research on gamma rays took him to the University of California, Riverside. Before joining RTB in 2005, Jeff spent much time working on the STACEE and VERITAS gamma-ray telescopes and was involved in research projects such as the Solar Two Project and the Whipple Collaboration.

Today, Jeff writes and speaks on the compatibility of faith and science and on evidence for intentional design from a multiverse theory, dark energy and dark matter, and exoplanets. His speaking engagements take him to universities, churches, and other venues around the world, including high schools and youth groups. Jeff also serves as executive director of Reasons Institute and Reasons Academy (RTB's accredited online learning programs) and hosts the RTB website's video interviews.He is the author of the book Who's Afraid of the Multiverse? and coauthor RTB's Impact Events student devotional series.

Additionally, Jeff currently holds a part-time position at UCLA and is working on GAPS, a balloon experiment seeking to detect dark matter. Jeff is coauthor on more than 30 papers published in peer-reviewed journals, such as Astrophysical Journal, and Astroparticle Physics, and Astrobiology, as well as numerous conference proceedings.

A Christian from childhood, Jeff struggled to reconcile his love of science and his faith. While an undergrad, he heard astronomer and RTB founder Hugh Ross speak on the constructive integration of science and faith. The talk introduced Jeff to a creation perspective that aligns with both scientific data and biblical descriptions of nature. Ten years later, a professor encouraged Jeff to enroll in RTB's volunteer apologetics program, which led to a position on the organization's scholar team.

Jeff and his wife, Lisa, live in Southern California with their five children.


Download the latest photos of Jeff Zweerink. A variety of styles and poses are available to use for outreach event publicity or in conjunction with a media interview.

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View video clips taken from outreach events, Q&A sessions, and ministry resources.