LAGEOS (LAser GEOdynamics Satellite) | Simple Site

LAGEOS (LAser GEOdynamics Satellite)

LAGEOS: An Earth Science Mission Built for Enduring Precision

On May 4, 1976, a spacecraft resembling a disco ball entered orbit almost 3,700 miles (6,000 kilometers) above Earth. This shiny, two‑foot‑wide (60‑centimeter) sphere called the Laser Geodynamics Satellite, or LAGEOS, is covered with 426 retroreflectors—small mirrored prisms designed to bounce laser light directly back to where it came from.

Posted May 4, 2026

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17

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65

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14

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6

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8

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21

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5

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3

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3

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1

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55

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2

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235

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4

13

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108

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41

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1

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6

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3

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3

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6

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14

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7

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1

James H. Newman

1

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19

2

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21

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59

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9

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17

2

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1

1

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3

1

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395

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6

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79

45

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7

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2

33

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10

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3

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2

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1

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43

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1

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7

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226

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44

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4

Science of Space Exploration

1

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3

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5

7

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8

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4

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8

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1

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1

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1

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62

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1

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33

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1

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7

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16

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7

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13

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7

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26

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1

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98

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172

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33

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11

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5

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3

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3

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14

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4

22

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38

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10

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3

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1

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18

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16

1

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1

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2

2

180

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4

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4

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1

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5

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1

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6

8

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3

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7

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25

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164

16

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3

26

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5

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1

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1

1

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5

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2

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18

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16

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11

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17

1

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1

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2

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2

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3

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8

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