The PoSSUM 13

PoSSUM 13 Mission Patch

The PoSSUM 13 is a talented group of thirteen female PoSSUM Scientist-Astronaut Candidates who serve as global ambassadors in increasing opportunity and representation for students.

Our Mission

Created to honor the legacy of the Mercury 13, Project PoSSUM is pleased to announce the PoSSUM 13, a talented group of thirteen female Scientist-Astronaut Candidates and Advanced Academy PoSSUM graduates who will serve as global ambassadors in increasing opportunity and representation for students — and especially young women– who have a passion for space science and exploration. Through combination of educational outreach initiatives and mentorship, the PoSSUM 13 serve as ambassadors to citizen science.

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PoSSUM 13 About Us

The PoSSUM 13 Microgravity Challenge



The 2020 Call for Proposals for the PoSSUM 13 Microgravity Flight Challenge is Now Open!

Submissions are due on May 1, 2020

The PoSSUM 13 Microgravity Flight Challenge invites female-led student teams  worldwide to compete for a payload experiment aboard the National Research Council of Canada’s Falcon 20 research aircraft.  This plane is capable of flying steep maneuvers called  parabolas, allowing researchers to experience repeated periods of weightlessness or microgravity.  Scientists use these flight conditions to study the effects of reduced gravity on humans and hardware.

In an effort to celebrate and promote the achievements of women in space science, up to two teams will be selected to fully design and build their experiment and will receive mentoring from PoSSUM Scientist-Astronaut Candidates regarding pre-flight, in-flight, and post-flight procedures.  One student from the top winning team will have the opportunity to fly as a mission specialist on board the Falcon-20 in September 2020 as part of PoSSUM’s annual microgravity campaign (certain restrictions and conditions apply).

Chris Lundeen and Ted Southern Preparing Fluids Experiment

Eligibility and Requirements

  • Current students, 13-17 years of age. This includes students enrolled in charter schools, correspondence courses, or non-traditional institutions such as home school, robotic clubs, or community-led organizations.
  • Teams of up to four students may apply, so long as the Team Lead is a female or female-identifying student.
  • Teams require at least one adult mentor. Your mentor can be a parent, teacher, community leader, or a scientist.
  • Department of State Export Administration Regulations (EAR) apply.
 Each proposal team should address the following questions in their experiment plan:
  • What science question do you want to answer?
  • Why is this science problem important for space exploration or life here on Earth?
  • Why must it be done in microgravity?
  • Is 20 seconds enough time to get useful results?
  • Methodology (design diagrams can be included here)
  • Proposed plan for data collection and analysis
PoSSUM 13 Access to STEM

Important Dates and Deadlines

March 15, 2020: Microgravity Webinar

May 1, 2020: Proposals Due

May 15, 2020: Winning Teams Announced (EXTENDED)

May-June, 2020: Payload Build, Mentoring

July 1, 2020: Student Payload Demonstration (via video conference)

July 15, 2020: Test Equipment Data Package Due (TEDP)

August 1, 2020: Payloads Shipped to Integrated Spaceflight Services

August 26, 2020: Winning Student Announced and Payloads Shipped to National Research Council of Canada

September 27 to October 2, 2020: Flight Campaign (Ottawa, Canada)

Download Payload Guidelines
Download Proposal Guidelines

Project PoSSUM 2018 Microgravity Flight Research Campaign


Submit a written proposal and a short video explaining your idea for the experiment.  Describe the science question your team wants to answer and the description of the procedures to be performed by Scientist-Astronaut candidates or Payload Specialists during the flight.  Proposals shall be no more than five pages long and may include drawings describing the experiment.  Please include:

1) the title of the experiment,

2) the names of all students and mentors and their roles in the project,

3) the name of school, institution, education platform, or program,

4) mission patch design,

5) a short summary or abstract, and

6) a list of equipment/materials (if applicable)

7) your experiment plan

Videos shall be no longer than two (2) minutes and can be narrated in Spanish, English, or French. They should include the following:

1) an introduction of the team,

2) a brief description of your experiment idea,

3) What excites you about having an experiment flown in microgravity?

Then upload your video to Youtube (with parent or adult mentor approval) and include a link in your application by the contest deadline.

Your experiment will be evaluated by a team of experts assessing the following categories:
  1. Feasibility of the proposed approach (15%)
  2. Innovation and Creativity (15%)
  3. Relevance of having your experiment in a reduced gravity environment (30%)
  4. Safety compliance – see Experiment Constraints (20%)
  5. Teamwork, Leadership, and Communication (20%)
Submit Proposal


After a competitive evaluation period, three student team finalists were selected and flew experiments during our 2019 campaign.

Colombia Microgravity Challenge
The “Magnetic Force in Microgravity” Team from Colombia: Ivanna Hernandez, Maria Paula Lozano, and Giuliana Fiorillo.  Mentor: Damian Madero
Guatemala Microgravity Challenge
The “G-Force: Efficiency on energy transformation of a semi-automatic dynamo in microgravity-induced environment” Team from Guatemala:  Marcela Billingslea, Natalia Montes, Isabella Sandoval, Cristina Castellanos. Mentor: Iliana Cano
Mexico Microgravity Challenge
The “Caring for the environment: Separation of oil and water” Team from Mexico: Nayeli Ruiz Rodriguez, Rubi Aramburo Rios, Estrella Yazarela Espinoza Barrios, and Abraham Velarde Canizales.   Mentor: Susana Mendoza Rios

The 2019 PoSSUM 13 Microgravity Challenge Winner Ivanna Hernandez from Colombia demonstrates her experiment in microgravity with the Project PoSSUM team in the 2019 campaign at the National Research Council of Canada.

This year it could be YOU!


Do you have any questions? The answer may just be in our Frequently Asked Questions (FAQ), you can visit this section by clicking the next button.

PEEK INTO OUR GALLERY: The Original Mercury 13

The Mercury 13 were thirteen American women who, as part of a privately funded program, underwent the same physiological screening tests as the astronauts selected by NASA on April 9, 1959 for Project Mercury.


The term was coined in 1959 by Hollywood producer James Cross as a comparison to the Mercury Seven name given to the selected male astronauts; however, the Mercury 13 were not part of NASA’s astronaut program, never flew in space and never met as a group. William Randolph Lovelace II, former Flight Surgeon and later, chairman of the NASA Special Advisory Committee on Life Science, helped develop the tests for NASA’s male astronauts and became curious to know how women would do taking the same tests.  All of the candidates were accomplished pilots.


Lovelace and Cobb reviewed the records of over 700 women pilots in order to select candidates, and did not invite anyone with less than 1,000 hours of flight experience. Some of them may have been recruited through the Ninety-Nines, a women pilot’s organization of which Cobb was also a member. Jane Hart was the oldest candidate, at 41, and mother of eight. Wally Funk, was the youngest, at 23. Marion and Janet Dietrich were twin sisters.


Help us keep the STEM ambitions of young women alive! Each PoSSUM 13 Microgravity Challenge costs about $12,000 and your kind donation helps us offset the operational expenses of experiment test and integration, flight, and the expenses involved with transporting and lodging the winning student and her chaperone.

PoSSUM 13 Microgravity Challenge

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Donation Total: $35.00