Gemini IV | Simple Site

America’s First Spacewalk

NASA astronaut Ed White, pilot of the Gemini IV mission, floats in space on June 3, 1965, while performing the first spacewalk by an American. As White floated outside the spacecraft, he used a Hand-Held Maneuvering Unit, informally called a “zip gun.” The device, seen in White’s right hand in this image, expelled pressurized oxygen […]

Posted June 3, 2025

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Coronal Mass Ejections

2

The Sun & Solar Physics

1

EPSCoR

3

Office of the Chief Scientist (OCS)

1

Pulsars

11

Goddard Institute for Space Studies

15

International Space Station Division

7

Origin & Evolution of the Universe

12

Ranger 7

2

7

James Webb Space Telescope (JWST)

113

Artemis

231

Rings of Saturn

10

Ceres

2

2

Joint Agency Satellite Division

4

Mars Moons

5

Climate Science

7

Technology Demonstration

13

Earth Science Technology Office

8

Weather and Atmospheric Dynamics

6

NICER (Neutron star Interior Composition Explorer)

8

Planetary Nebulae

6

Game Changing Development Program

32

Humans in Space

294

Air Traffic Control Labs

2

1

Sentinel-6 Michael Freilich Satellite

4

STS-125

1

Low Earth Orbit Economy

19

Moons

4

12

Tropospheric Emissions: Monitoring of Pollution (TEMPO)

8

Exoplanet Detection Methods

5

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