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NASA’s Simulated Mars Mission Marks 200 Days Inside Habitat

The four crew members of NASA’s Mars simulation recently marked 200 days into their 378-day Red Planet mission on May 7. Currently, the crew is in a simulated two‑week loss‑of‑signal period that mimics a Mars-Earth communications blackout when Mars moves behind the Sun.

Posted May 7, 2026

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6

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10

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1

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8

3

7

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3

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1

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11

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170

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2

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1

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9

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10

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15

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10

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1

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106

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3

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4

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3

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156

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25

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4

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1

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2

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1

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30

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1

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1

Donald R. Pettit

4

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6

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1

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2

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16

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1

12

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2

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2

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10

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7

13

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3

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1

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12

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4

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3

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8

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4

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1

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4

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1

STS-41B

3

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1

2

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4

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14

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1

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624

2

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1

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17

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2

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2

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4

7

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20

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1

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110

1

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344

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11

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6

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20

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158

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19

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9

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22

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5

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1

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6

28

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3

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17

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27

8

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2

42

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7

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1

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51

7

5

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1

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649

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101

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4

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21

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1

291

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1

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4

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3

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266

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5

2

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4

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5

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13

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58

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1

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5

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135

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1

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3

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1

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2

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23

9

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8

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3

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1

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1

Find Your Place

11

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4

Grades 9-12 for Educators

14

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19

Becoming an Astronaut

5

Polar

1

Science Mission Directorate

208

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