NASA Tests New RS-25 Engine | Simple Site

NASA tested RS-25 engine No. 20001 on June 20, at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi. Test teams fired the engine for almost eight-and-a-half minutes (500 seconds), the same amount of time RS-25 engines fire during a launch of an SLS (Space Launch System) rocket on […]

Category: Marshall Space Flight Center, Space Launch System (SLS), Stennis Space Center

Posted on June 23, 2025

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Cell and Molecular Biology

2

Science & Research

221

InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport)

4

Low Boom Flight Demonstrator

23

Artemis Campaign Development Division

2

Private Astronaut Missions

3

Seasat

1

274

Lunar Surface Innovation Initiative

8

1

STS-129

2

Earth Surface & Interior

3

316

NASA Innovative Advanced Concepts (NIAC) Program

26

OSAM-1 (On-Orbit Servicing, Assembly, and Manufacturing 1)

1

Fruit Fly Lab (FFL)

1

1

HERA (Human Exploration Research Analog)

7

Ames Research Center's Science Directorate

32

Blue Ghost (lander)

4

Richard H. Truly

1

Sounding Rockets Program

15

Land Cover

3

Marshall Earth Sciences

29

Space Operations Mission Directorate

50

DART (Double Asteroid Redirection Test)

8

Sustainability at Kennedy Space Center

10

ExoMars

3

Meetings, Workshops & Conferences

1

NISAR (NASA-ISRO Synthetic Aperture Radar)

12

1

Visible Infrared Imaging Radiometer Suite (VIIRS)

2

Globular Clusters

1

2017 Solar Eclipse

3

Office of Small Business Programs (OSBP)

11

Extreme Temperatures

3

1

Grades 5 - 8 for Educators

12

Advanced Space Suits

2

Astrophysics Division

153

Quasars

6

61

John B. Herrington

1

MAIA (Multi-Angle Imager for Aerosols)

1

Community Partners

3

STS-68

1

Edward G. Gibson

1

Transformative Aeronautics Concepts Program

18

Natural Disasters

24

Partner With Us

5

Game Changing Development Program

32

Human Research Program

24

Apollo 10

3

C-20A

3

Rosetta

1

Learning Resources

132

4

Didymos & Dimorphos

1

Technology for Living in Space

4

MinXSS (Miniature X-ray Solar Spectrometer)

1

CIPHER (Complement of Integrated Protocols for Human Exploration Research)

1

Stennis Test Facility and Support Infrastructure

3

1

4

20

Opportunities For International Participants to Get Involved

12

Floods

6

William R. Pogue

1

Greenhouse Gases

9

Air Mobility Pathfinders project

5

Becoming an Astronaut

5

Ranger 7

2

Sojourner (Rover)

1

JUICE (Jupiter Icy Moons Explorer)

1

Mars Exploration Program

6

Crew Health and Performance Exploration Analog (CHAPEA)

9

Sunspots

4

EPSCoR

3

University Leadership Initiative

5

25

8

Vertical Motion Simulator

1

Gemini VI

1

ICESat-2 (Ice, Cloud and land Elevation Satellite-2)

3

Aqua

1

Planetary Science

86

Centennial Challenges

12

Science Activation

57

Integrated Aviation Systems Program

16

Low Earth Orbit Economy

22

Blog Posts

Milano Cortina 2026

February 5, 2026

Curiosity Blog, Sols 4788-4797: Welcome Back from Conjunction

February 5, 2026

NASA, University of Texas Expand Research and Workforce Development

February 5, 2026

Newsletter Archive