Research.

Click a research topic below to access an ADS library of my publications in that area.

Variable Stars

Detection and characterisation of interesting exoplanet systems.

Media.

As seen on TV.

NASA's Unexplained Files

I appeared in eight episodes across two seasons of the Discovery Science channel program 'NASA's Unexplained Files', talking about interesting planets discoveries. Click above for a short clip about Kepler-186f.

The Science Behind "The Expanse"

I joined the cast, writers and production crew of the Syfy show "The Expanse" in a live, recorded panel event at Caltech discussing some of the fantastic science behind the show.

"Under The Same Stars"

I sat down recently with writer and director Ali Alvarez, to be interviewed for her new upcoming documentary entitled "Under The Same Stars", about female astrophysicists in the US. The film is planned for release in 2018.

NASA Social - TESS Mission

I was a panelist on the NASA Social TESS mission pre-launch briefing, setting the stage of the current exoplanet landscape to explain the need for a mission like TESS.


As heard on the air:

March, 2018: The Science Show: Exoplanet gem unearthed in Stargazing Live
December, 2017: Surely You're Joking: Jessie Christiansen and the Goldilocks retraction
July, 2017: Spacepod Episode 102: A thrilling tale of discovery with Dr. Christiansen
May, 2016: Surely You're Joking: Jessie Christiansen and the hedonic treadmill of planets
April, 2016: Spacepod Episode 42: Finding Exoplanets with Dr. Christiansen

Jessie recording a podcast

Press releases, news articles and quotes...

K2-138 coverage:
2/8/18, AAS Afternoon Astronomy Coffee Hangout: 5 Alien Worlds: Planetary system around K2-138
1/15/18, Cosmos: Music of the spheres: chain of planets rotates at “perfect fifth” intervals
1/12/18, BBC News: Citizen science bags five-planet haul
1/12/18, Gizmodo: Star System With Five Rocky Planets Discovered by Amateur Astronomers
1/11/18, Caltech press release: Citizen Scientists Discover Five-Planet System

The astronomers behind System Sounds (particularly postdoc Matt Russo) have created a beautiful visual and aural experience of our new exoplanet system. It is SO COOL. Every time one of the planets passes between us and the star, it makes a note. The tone of the note (how high or low it is) is determined by the planet's orbital period. It sounds so pretty because of the cool chain of resonances that these planets are in! Have a listen!



Other articles and quotes:
5/14/18, Gizmodo: Spacecraft May Have Flown Right Through a Plume of Water on Jupiter's Moon Europa
5/3/18, CBS New York: NASA Getting Help Exploring The Universe From ‘Citizen Scientists’
4/18/18, Washington Post: NASA’s newest planet hunter launches successfully
3/27/18, Newsweek: Newly discovered Earth-sized planet K2-229b could reveal how Mercury was created
2/15/18, Newsweek: NASA Kepler' K2 Mission scientists discover 95 new planets beyond our solar system
8/8/17, Christian Science Monitor: Hunt for other worlds: 3,500 exoplanets and counting
6/11/17, Sci-News.com: HD 3167d: New Super-Earth Discovered around Nearby Star
4/18/17, USCS News: Planet hunting citizen scientists produce quick results for astronomers
3/1/17, Christian Science Monitor: Could the TRAPPIST-1 exoplanets harbor alien life?
10/3/16, New Scientist: Superfast spinning stars cause strangest weather in the universe
9/6/16, FiveThirtyEight: Why It's So Hard to Find the Next Earth, Even if You're Looking Right At It
7/6/16, Smithsonian.com: How a Young Jupiter Acted as Both Protector and Destroyer
5/10/16, BBC News Hour: On Kepler's Discovery of 1284 New Planets
1/7/16, BBC Science News: Star clumps harbour 'sweet spot' in search for alien life


Outreach.

I love talking to the public about astronomy, our beautiful sky, and the exciting hunt for planets outside out solar system. I am so lucky that I get the opportunity! Here are some upcoming and recent events:

2018
August: Special lecturer, USQ Winter Festival of Astronomy, Toowoomba QLD
June: "Evening with the Pros" speaker, Society for Astronomical Sciences
March: Speaker, Riverside Astronomical Society
March: Speaker, NASA's Universe of Learning Science Briefing
February: Guest speaker, Exolife Hangout: Finding Earth 2.0
February: Guest speaker, Weekly Space Hangout: Dr. Jessie Christiansen and "Exoplanet Explorers"

2017
December: Panel speaker, Is the Earth Special?
December: Podcast guest, Surely You're Joking!
October: Caltech Astronomy presents Sidewalk Astronomy in Old Town Pasadena
August: Panel speaker, The Official Star Trek 2017 Convention
August: Telescope captain, Caltech Astronomy Lecture and Stargazing Party
July: Podcast guest, Spacepod
April: Speaker, Society for Astronomical Sciences
February: Speaker, Los Angeles Astronomical Society

2016
October: Telescope captain, Caltech Astronomy Lecture and Stargazing Party
August: Speaker, NASA's Universe of Learning Science Briefing
August: Speaker, Caltech Astronomy Lecture and Stargazing Party
June: Speaker, Astronomy on Tap
June: Speaker, AAS 228 Student Education and Outreach Event
May: Podcast guest, Surely You're Joking!
April: Podcast guest, Spacepod

PS. The Caltech astronomy department puts on regular events - you should check them out!