Portrait photo of a man with a short grey beard wearing glasses and a dark suit jacket and tie

Eric Ianson

Deputy Director, Planetary Science Division, and Director, Mars Exploration Program and Radioisotope Power Systems Program / NASA Headquarters

Mr. Eric Ianson is currently the Deputy Director of the Planetary Science Division of the Science Mission Directorate at NASA Headquarters. In this role, he supports the exploration of the solar system, including missions to and research of the planets, moons, and small bodies (asteroids, comets, Kuiper belt objects, etc). He also serves as the Program Director for the Mars Exploration Program and the Radioisotope Power Systems Program.

From 2015 to 2019, Eric was the Associate Director of Flight Programs in the Earth Science Division of the Science Mission Directorate at NASA Headquarters.  In this role, he oversaw all NASA Earth Science satellite and airborne programs and projects, as well as the data systems that house and distribute the data from these programs and projects. From 2013 to 2015, he served as the Deputy Associate Director for the Earth Science Projects Division at Goddard Space Flight Center (GSFC). This position also included responsibility as Deputy Program Manager for both the Earth Systematic Missions Program and Reimbursable Projects Program. He has previously served as a Program Executive at NASA Headquarters, beginning in 2004, for several Earth Science missions, including OCO, OCO-2, Aquarius, and SMAP.  He also served as Acting Program Manager for the Earth System Science Pathfinder (ESSP) Program from 2004 to 2008 and led efforts to transition this role to Langley Research Center. Eric also served on a detail to GSFC, as Mission Manager for the IRIS project, a Heliophysics mission that was successfully launched in June 2013.

Eric has experience working with various NASA Centers and has participated in international and interagency partnerships.

Prior to joining NASA, Eric worked for the Department of Defense for 14 years, involved in program and project oversight for the US Navy on missiles, combat systems and associated equipment.

Eric received a B.S degree in Mechanical Engineering from the University of Rochester and an M.S. degree in Aerospace Engineering from the University of Southern California. He is also a graduate of the “Leadership for a Democratic Society” program at the Federal Executive Institute.

Q&A with Eric Ianson

Eric Ianson stands, hands in pockets, in front of a rocket on the launch pad.
NASA’s Eric Ianson near the launchpad for NASA’s DART spacecraft. DART launched at 10:21 p.m. PST, Nov. 23, 2021, (1:21 a.m. EST, Nov. 24), aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base in California. DART is the first-ever mission dedicated to investigating and demonstrating one method of asteroid deflection.
Eric Ianson


Sachem High School, Lake Ronkonkoma, New York

University of Southern California: M.S. in Aerospace Engineering

University of Rochester in Rochester, New York: B.S. in Mechanical Engineering

Spending his time off from grade school at the library reading up on planets and rockets, Eric Ianson fell in love with space. After a stint as a civilian working on missiles and combat systems for the Navy, he fulfilled his lifelong dream to join NASA. He tells us about his current job as deputy director of NASA’s Planetary Science Division, and some of his favorite NASA missions.

What first sparked your interest in space and science?

It started when I was a kid. I would spend Saturdays – or weekdays during the summer – going to the library, and reading up on space and missile systems. I remember doing a lot of photocopying back then to copy pictures out of books and magazines. I would bring those home with me, and I would draw lots of pictures about space. I loved learning about space and technology.

How did you end up working in the space program?

I joined NASA in 2004. I had a bit of a circuitous route to get to here. I worked for the Navy as a civilian for many years. I did engineering work on missiles and combat systems. Eventually, I decided to apply for a program executive position at NASA, and that brought me here.

It was a lifelong dream to work for NASA. One of my science projects in middle school was on the solar system. I did the project on the Voyager missions, and I built the model of the solar system and showed the track of both spacecraft. I had a train track that would follow the path that Voyager 1 and Voyager 2 took. I always think back to that as maybe the birthplace of my time at NASA. Then I came to NASA, and it's just been an exciting adventure working on different projects.

It was a lifelong dream to work for NASA.

Eric ianson

Eric ianson

Acting NASA Associate Administrator

Tell us about your job. What do you do?

I'm currently the deputy director of NASA’s Planetary Science Division. I assist Dr. Lori Glaze, who's the director of planetary science, in managing our entire portfolio and our team in planetary science – so missions from Mercury out to Pluto and the Kuiper Belt.

In addition to my overarching duty as the deputy, I have two specific assignments. I'm the program director for NASA’s Mars Exploration Program, and for the Radioisotope Power Systems program (RPS).

The Mars Exploration Program is responsible for everything related to the robotic exploration of Mars except the Mars Sample Return Mission (although we coordinate closely with that program as well).

The Radioisotope Power Systems program develops the power systems for our two most recent rovers, Curiosity and Perseverance, as well as many of the outer solar system missions. [The outer planets are gas giants Jupiter and Saturn and ice giants Uranus and Neptune. Beyond Neptune are dwarf planets, including Pluto.]

If we're looking to go far beyond Earth into the outer solar system, we need to use nuclear power as opposed to solar arrays. The RPS program allows us to do that.

Before I joined the Planetary Science Division, I was the associate director for flight programs in Earth science. I managed all of the flight programs for Earth science at NASA.

What one piece of advice would you give others who are interested in a similar career?

I think the main thing is to work hard and follow your dreams. While certainly, NASA hires many scientists and engineers, it's not exclusive to that. We hire people from many different backgrounds. We have English majors, artists, political science majors, and lawyers. It takes a diverse community to successfully implement all of our missions.

It’s important to do the best that you can in whatever field you go into and be passionate about it. If you're passionate about what you're doing, success will follow. I think that's certainly true at NASA.

There's no magical route to follow to become an employee at NASA. Everyone I know has followed a different path. Everyone should just follow the path that works best for them, but always continue to try and work to get opportunities for yourself, such as internships. Certainly do networking to get better connected, and positioned for when an opportunity may present itself.

What has been your biggest challenge, professional or personal, and how did you overcome it?

The biggest challenge that I faced was that the first mission that I was involved in for a launch at NASA – the Orbiting Carbon Observatory – didn't reach orbit. There was a failure on the launch vehicle that prevented it from reaching orbit. I was sitting in the mission control center, and it was both the greatest day of my career and the worst day of my career. Watching the launch was super exciting, and everything seemed to be going well. Then there was an anomaly, and we realized that the mission was lost.

That was probably the biggest challenge, and not just for me. I had been on the mission for several years, but many people had dedicated their entire careers to it. I worked with my management to justify a rebuild of the mission and a rapid restart. I spearheaded efforts to get a rapid restart of the mission and to streamline it through the process, such that it could launch as quickly as possible.

I was a program executive on the Orbiting Carbon Observatory at the time of the launch failure, but I left that position, before its development was completed, to pursue other opportunities. I'm proud to say that Orbiting Carbon Observatory-2 did, in fact, launch and is operational and producing fantastic science data.

Who inspires you?

The biggest mentor in my career was Michael Freilich, who was the director of NASA’s Earth Science Division for about 13 years. He passed away after a battle with pancreatic cancer in 2020, and it was incredibly tragic. He was still a vital man. He was an incredible person to work for. He was brilliant; he might be the smartest person I've ever met. Every time you went into his office, you left smarter. On top of all that, he was funny, extraordinarily kind, and generous. He really helped guide my career throughout my time at NASA.

When you work at NASA, you can find inspiration almost everywhere you go. There are people throughout the agency who are fantastic. They come from all different backgrounds and they bring incredible things to the table. My current boss, Dr. Lori Glaze, is amazing. I get a charge out of the way we collaborate on things.

When you're working at NASA, you're working among the smartest people in the world. It's somewhat like professional sports. Everyone who plays professional sports was the best in their high school. Most of them were at the top of their college teams. Then when they joined the NFL or the NBA, they were the best of the best. That's true at NASA, as well. We have the best of the best, and it's gratifying to work with so many incredible people.

I feel I can learn something from everyone I work with, regardless of their position.

What have been some of your favorite projects to work on?

I certainly have a warm place in my heart for the Orbiting Carbon Observatory and the follow-on mission, just for everything that happened with that. There have been a lot of other cool missions that I've worked on. In Earth science, there’s the Cyclone Global Navigation Satellite System (CYGNSS), a constellation of eight micro-satellites that gather data about wind speeds over Earth's oceans to improve our understanding of hurricanes. It was also fun to work on the Aquarius mission, in collaboration with the Argentina space agency.

With planetary missions, there's no shortage of amazing missions. Certainly, the Mars rovers are incredible. Perseverance is collecting samples right now on Mars to bring to Earth. We have the Mars helicopter, Ingenuity, which has been fun to work with. Two other missions were recently launched. One is Lucy, a mission to the Trojan asteroids, which have never been explored before. Then the DART mission was launched in November of 2021. It’s NASA’s first planetary defense mission to attempt to deflect an asteroid. We have Europa Clipper coming up, which I'm excited about because it will explore Jupiter’s icy moon, which may have conditions suitable for life in its subsurface ocean. Dragonfly is another exciting mission, in which we're going to fly a rotorcraft on Saturn's moon Titan. There are just so many fun projects. It's hard to choose favorites among them.

What are some fun facts about you?

My current hobby is photography. I love to do travel, landscape, and architecture photography.

I'm also a big consumer of pop culture. I'm a huge movie fan. Also, I've been to around 300 rock concerts. One time, I wrote a weekly blog theorizing about the characters and mysteries on the TV show “LOST.”

I have two children and a fantastic wife who accompanies me on all of my adventures. We love to travel all around the U.S. and the world.

What is your favorite space image and why?

I attended the launch of the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station, or ECOSTRESS, on June 29, 2018, at Cape Canaveral, Florida. ECOSTRESS is an Earth science instrument built by NASA’s Jet Propulsion Laboratory (JPL). It launched in a SpaceX Dragon cargo spacecraft aboard a Falcon 9 rocket to the International Space Station. Liftoff was just before dawn, and the twilight effect, or phenomena, created this incredible halo around the rocket exhaust. It was unlike anything I had ever seen.

Rocket Plume
ECOSTRESS, an Earth science instrument built by JPL, was launched to the International Space Station on a SpaceX Dragon cargo spacecraft at 5:42 a.m. EDT on June 29, 2018.
Eric Ianson