# @nasaartemis on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/CoFmGpOOG3V
- **Gondola URL:** https://gondola.cc/posts/15341143-nasaartemis-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/legacy-do/7733cd2e8b1ef3c3bdb09e0d39f2bcdd029a7493fb879149d6b9315be9c1fe96.jpg
- **Posted:** 2023-01-31T17:10:24.000+00:00
- **Account Owner:** NASA Artemis (@nasaartemis) — https://gondola.cc/nasaartemis

## Caption

The phantoms are back!

Although the #Artemis I mission to the Moon and back was uncrewed, there were a number of payloads aboard to help us prepare astronauts for future flights on the Orion spacecraft. These payloads included the Matroshka AstroRad Radiation Experiment (MARE), which consisted of two manikins, or “phantoms,” manufactured from materials that mimic human bones, soft tissues, and organs of an adult female.

The phantoms have a three-centimeter grid embedded throughout the torsos that enable scientists to map internal radiation doses to areas of the body that contain critical organs. One of the phantoms, Zohar, wore a new radiation protection vest called AstroRad. The other phantom, Helga, did not wear the vest, allowing research to evaluate  the vest’s effectiveness to block space radiation during the lunar mission. Female forms were selected for this experiment because women typically have greater sensitivity to the effects of space radiation, but the AstroRad vest is designed to protect both men and women.

MARE is a part of an agreement between NASA, the Israel_Space_Agency (ISA), and the German Aerospace Center (dlr.en).

Image descriptions:

1. Two female manikin torsos lie on tables inside the Space Station Processing Facility at NASAKennedy Space Center in Florida on Jan. 11, 2023. Each manikin is strapped into a seat with blue straps. Credit: NASA/Glenn Benson
2. A close-up of Zohar lying face-up on a table. Zohar is wearing a black vest underneath thick blue straps. The words “StemRad” and “Lockheed Martin” can be read on the front of the vest. Credit: NASA/Glenn Benson
3. A close-up of Helga lying face-up on a table. Helga is blue and is strapped to its seat with thick blue straps. The German flag, the Israeli flag, and the American flag can be seen on the manikin’s shirt. Credit: NASA/Glenn Benson
4. Helga and Zohar stand upright on two tables inside the Space Station Processing Facility at Kennedy Space Center. They are free of the straps and seats that previously held them. NASA/Kim Shiflett
5. Members of the MARE investigation team stand behind where Helga rests on a table and smile at the camera. NASA/Kim Shiflett

#LunaTwins

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## Tags

lunatwins, artemis

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