Wednesday, July 2, 2025

Swapping Mars for Exoplanets: My Time at Harvard University

Providing graduate students with a range of experiences is a key part of helping them figure out what they want to do and where they want to do it once they have completed their degrees. Sometimes that means visiting another university lab, or working for a government agency or finding out what it means to join a team in the industrial sector. For much of the year, PhD student Grace Bischof has been investigating these questions in the lab of Robin Wordsworth at Harvard University.

by Grace Bischof 

Last summer, I received an email telling me that I was eligible to apply to the Michael Smith Foreign Study Supplement, funded through the Natural Sciences and Engineering Research Council of Canada (NSERC). This supplement designates money for graduate students to partake in research internships at institutions abroad to help build global connections. Immediately after receiving the email, I excitedly emailed John to ask if we could talk about possible researchers that I could reach out to about this opportunity to see if they would be interested in having me in their lab for a few months.

At the top of the list of researchers I was interested in connecting with was Dr. Robin Wordsworth at Harvard University. During my time interning at JPL, one of Robin’s papers formed part of the basis for the work I was doing there, so I became familiar with some of his research. About a year later, I saw Robin give two fantastic talks about the environment of Mars at LPSC and the 10th International Conference on Mars. Ironically, though the two talks I’d seen by Robin had been about Mars, and my research at York for the past ~5 years has been about Mars, Robin does not primarily do research on the Martian atmosphere. Though Mars makes up a portion of his research, he also works extensively on modelling the atmospheres of exoplanets. So, for the first time, I wrote and submitted a proposal for research outside of the solar system, characterizing the atmospheres of rocky exoplanets through Lyman-alpha transit spectroscopy.

I learned in late December that my proposal was successful and by the first week of February I was on a plane, flying to Boston, Massachusetts. Unlike the winter of 2023 that I spent in sunny Pasadena happily skipping the cold Toronto winter, Boston has a similar climate to home. Upon landing, I was greeted with below zero temperatures and several inches of snow on the ground. I took a cab to my new home in Cambridge (where Harvard is located), which is just across the Charles River from Boston, feeling equal parts excited and anxious about the next few months ahead of me.

Luckily, I soon learned that I had I little to be anxious about. Though I had never researched atmospheres other than Mars’, I loved the project I was working on (and will write a blog post detailing it later on!). At the beginning of the internship, it felt like I had a mountain of literature to read and understand to even grasp the basics of the project, but I chipped away at it slowly, finding a new love for exoplanetary science. Everyone in Robin’s group was extremely friendly and thoughtful – I learned a lot listening to them talk about their research. Going into this experience, I didn’t think I could enjoy an area of research as much as I love Mars, but I am very pleased to have discovered something new that I find so fascinating. 

One of the best things about working at Harvard is the stunning campus, with its gorgeous centuries-old buildings. A favourite location of mine on campus was the Harvard Museum of Natural History, which also encompasses the Geological and Mineralogical Museum, the Museum of Comparative Zoology, the Harvard University Herbaria, as well as the Peabody Museum of Archaeology and Ethnology. My office was on the upper floor of the Geological Museum, so I was greeted by walls of gorgeous rocks and minerals every day. With a student ID, I was able to get in for free and roam around the floors of these museums. I took lots of pictures of the dinosaur fossils and bones for my 3-year-old nephew, Tate, who is a dinosaur fanatic. My favourite part of the museum was the comparative zoology section, where there are taxidermized animals of every kind you can imagine from all over the world – I kept finding it so fascinating to think that people in Australia would think seeing a kangaroo is as mundane as we find seeing a squirrel in Toronto. 


Under the bones of a Steller’s sea cow, while admiring the giraffe on my right

Since it was my first time in Massachusetts, I spent some time exploring the Boston area with friends and family who came to visit. We walked the Freedom Trail, visiting historic Boston sites like the Paul Revere House, Granary Cemetery where some of the American Founding Fathers are buried, and boarded the U.S.S Constitution, which is the world’s oldest commissioned warship that is still afloat. When my dad visited, we rented a car and spent a morning wandering the streets of Salem, learning more of the Witch Trials that plagued the town in the 1600s. That afternoon, we drove to Concord and visited the Orchard House, where Louisa May Alcott wrote and set the novel Little Women. The 2019 film adaption of Little Women is one of my favourite movies of all time, so exploring the home that inspired the novel was an experience I won’t forget!

 

 Outside of the Orchard House where Louisa May Alcott wrote Little Women 

Before I knew it, it was June 1st, and I was packing my bags to fly back home to Toronto after four incredible months at Harvard. One thing to know about my academic journey while reading this blog is that getting to grad school was not necessarily the easiest for me. Though I loved the content of my undergraduate degree in physics and I worked hard at it, my grades were certainly not the best. When John accepted me into PVL in 2020, he was taking a real chance on me. All that to say: I never thought I would spend any time at an institution as prestigious as Harvard, let alone feel like I belonged there and was proud of the work I was doing. This internship helped me grow confidence in myself both personally and professionally. Five years ago, when I started grad school, I wouldn’t have believed I would gain that confidence, so I am beyond lucky and grateful for this experience – and especially for my experience in PVL which got me here in the first place.