Welcome to the website of

Jack Sheehan

A PhD student at Harvard University studying planetary science.





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Photo 44

My poster at AGU 2024.

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Photo 38

EPS 10 Field Trip in Fall 2024.

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Photo 43

SE image of my first metal–silicate partitioning experiment after FIBing.

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Photo 30

I passed my quals!!!

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Photo 29

The cell I used for my very first successful LHDAC experiment! Charlie will always be special.

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Photo 15

Me and Gypsum at lab group meeting.

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Photo 32

Blue Lake in Indian Peaks Wilderness Area.

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Photo 31

Royal Arch near Boulder, Colorado.

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Photo 23

Building the eight-color system.

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Photo 25

Drilling a steel gasket using the Fischer Lab laser drill.

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Photo 42

Fischer Lab group photo 2024.

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Photo 33

The Atlantic Ocean from Acadia National Park.

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Photo 34

The coast in Acadia National Park.

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Photo 27

Close-up of my first metal alloy synthesized in the piston cylinder.

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Photo 1

2024 total solar eclipse in Middlebury, VT.

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Photo 18

Get in loser, we're laser-heating.

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Photo 13

Reuniting with (some of) the FRES IDEQ group at AGU 2023!

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Photo 12

My poster at AGU 2023.

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Photo 26

A snowy view from the Hoffman balcony—my favorite place to sit.

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Photo 10

2023 Fischer Lab group photo.

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Photo 11

EPS 10 Field Trip in Fall 2023.

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Photo 24

Aligning the laser-heating system.

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Photo 14

My first time presenting my PhD project, at the 2023 First-Year Symposium.

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Photo 9

2023 Fischer Lab group photo.

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Photo 19

Close-up of the diamond culets while aligning a diamond anvil cell.

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Photo 20

Aligning a first diamond anvil cell.

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Photo 5

2023 Fischer Lab group photo, dressed as (most of) the eight-color temperature measurement system.

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Photo 21

The Fischer Lab's piston cylinder apparatus, which originally belonged to Percy Bridgman.

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Photo 6

Cell assembly from my first piston cylinder experiment attempt.

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Photo 22

Close-up of the wires of my first thermocouple.

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Photo 8

Thórsmörk, Iceland from the 2022 EPS grad student field trip.

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Photo 4

Puffin near Dyrhólaey, Iceland from the 2022 EPS grad student field trip.

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Photo 3

Beach of Reynisfjara, Iceland from the 2022 EPS grad student field trip.

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Photo 2

Coast of Reynisfjara, Iceland from the 2022 EPS grad student field trip.

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Photo 41

Vatnajökull from the 2022 EPS grad student field trip. (Find the people for scale!)

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Photo 40

Seljalandsfoss from the 2022 EPS grad student field trip.

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Photo 39

Strokkur Geyser bubbling before erupting in the Haukadalur Valley from the 2022 EPS grad student field trip.

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Photo 7

Columnar Basalt in Kirkjubæjarklaustur, Iceland from the 2022 EPS grad student field trip.

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Photo 37

The 2022 EPS grad student field trip.

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Photo 35

The sample from my first ever multianvil cell experiment, at GSECARS.

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Photo 36

The tail of a humback whale off the coast of Massachusetts.

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Photo 28

One of the many turkeys found on Harvard's campus.

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Photo 16

Passport comparison at the Advanced Photon Source in Chicago.

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Photo 17

At the Advanced Photon Source in Chicago for the first time.

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