STEREO (Solar TErrestrial RElations Observatory) | Simple Site

Comets

Hubble Space Telescope

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Lucy

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The Sun

View Interstellar Comet 3I/ATLAS Through NASA’s Multiple Lenses

This article was updated to include the full range of dates from the SOHO image. Lee esta historia en español aquí. NASA is in the midst of an unprecedented solar system-wide observation campaign, turning its spacecraft and space telescopes to follow comet 3I/ATLAS, the third known interstellar object to pass through our solar system. Twelve […]

Posted November 19, 2025

Goddard Space Flight Center

GOLD (Global-scale Observations of the Limb and Disk)

Heliophysics Division

SOHO (Solar and Heliospheric Observatory)

STEREO (Solar TErrestrial RElations Observatory)

The Sun

NASA Missions Help Explain, Predict Severity of Solar Storms

An unexpectedly strong solar storm rocked our planet on April 23, 2023, sparking auroras as far south as southern Texas in the U.S. and taking the world by surprise. Two days earlier, the Sun blasted a coronal mass ejection (CME) — a cloud of energetic particles, magnetic fields, and solar material — toward Earth. Space scientists […]

Posted July 1, 2025

Comets

Fermi Gamma-Ray Space Telescope

Gamma-Ray Bursts

Goddard Space Flight Center

Heliophysics Division

ICON (Ionospheric Connection Explorer)

Parker Solar Probe (PSP)

SOHO (Solar and Heliospheric Observatory)

Stars

STEREO (Solar TErrestrial RElations Observatory)

The Sun

Venus

5 Surprising NASA Heliophysics Discoveries Not Related to the Sun

With NASA’s fleet of heliophysics spacecraft, scientists monitor our Sun and investigate its influences throughout the solar system. However, the fleet’s constant watch and often-unique perspectives sometimes create opportunities to make discoveries that no one expected, helping us to solve mysteries about of the solar system and beyond.

Posted November 20, 2024

Goddard Space Flight Center

MAVEN (Mars Atmosphere and Volatile EvolutioN)

Parker Solar Probe (PSP)

SOHO (Solar and Heliospheric Observatory)

STEREO (Solar TErrestrial RElations Observatory)

Multiple Spacecraft Tell the Story of One Giant Solar Storm

April 17, 2021, was a day like any other day on the Sun, until a brilliant flash erupted and an enormous cloud of solar material billowed away from our star. Such outbursts from the Sun are not unusual, but this one was unusually widespread, hurling high-speed protons and electrons at velocities nearing the speed of […]

Posted March 4, 2024

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Sounding Rockets

22

Studying Exoplanets

21

Apollo 10

3

Byron K. Lichtenberg

1

3

Ocean Circulation

1

Supermoons

1

Former Astronauts

18

University Student Research Challenge

7

Heat & Radiation

5

Carruthers Geocorona Observatory (GLIDE)

7

Deep Space Climate Observatory (DSCOVR)

7

Office of the Chief Financial Officer (OCFO)

4

Potentially Hazardous Asteroid (PHA)

4

Hi-Rate Composite Aircraft Manufacturing

4

José M. Hernández

1

Sentinel-6 Michael Freilich Satellite

11

4

Aeronautics Research Mission Directorate

108

Astrophysics Division

199

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1

National Advisory Committee for Aeronautics (NACA)

6

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2

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4

29

Weather and Atmospheric Dynamics

10

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22

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5

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9

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16

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22

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4

Electrified Powertrain Flight Demo

3

Phobos

5

Robert L. Crippen

1

IXPE (Imaging X-ray Polarimetry Explorer)

18

Low-Earth Orbit Economy

10

Space Operations Mission Directorate

60

Aqua

11

MUREP

11

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18

Galaxies, Stars, & Black Holes Research

42

Victor J. Glover

23

Charles F. Bolden Jr.

1

Doing Business with NASA

5

Opportunities For Students to Get Involved

41

22

Human Space Travel Research

2

Kjell N. Lindgren

4

71

STS-128

1

Air Traffic Management - Exploration

19

Barry E. Wilmore

2

Marshall Earth Sciences

29

Neptune

3

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74

TOPEX / Poseidon (ocean TOPography EXperiment)

2

GOES-U

4

2

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2

Meetings, Workshops & Conferences

1

Nicole P. Stott

1

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4

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11

Grants & Opportunities

6

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30

ER-2

5

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10

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1

1

Lunar Trailblazer

4

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238

5

Advanced Air Mobility

19

Artificial Intelligence (AI)

19

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1

153

Everyday Extraordinary Stories

1

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51

Gemini

3

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7

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1

Earth

285

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18

Radioisotope Power Systems (RPS)

16

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6

Landsat 9

53

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2

STS-66

1

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7

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240

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1

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16

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4

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6

C-130

1

Mini-RF Instrument

1

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1

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8

1

Uranus

7

141

Cassini

10

Deep Space Network

15

Office of the Chief Health and Medical Officer (OCHMO)

7

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8

High-Speed Flight

4

JPSS-4

1

8

Stennis Space Center

118

Aeronautics STEM

5

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4

Mars Exploration Program

11

National Space Council Users' Advisory Group (NSpC UAG)

1

1

The Kuiper Belt

6

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247

What We Do

10

Commercial Supersonic Technology

15

136

Partner With Us

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Research and Technology Mission Directorate

35

Interacting Galaxies

4

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1

Electromagnetic Spectrum

6

66

Robert L. Gibson

1

2

Lucy

10

20

Armstrong Flight Research Center

150

MUSE (Multi-slit Solar Explorer)

1

System-Wide Safety

7

Galaxy clusters

17

4

Charles O. Hobaugh

1

Donald R. Pettit

4

Opportunities For U.S. Citizens to Get Involved

5

Pulsars

14

Human Spaceflight Mission Directorate

6

Knowledge Inventory For Professionals

1

Skywatching Tips

39

STS-129

2

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3

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5

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8

Neptune-Like Exoplanets

8

Explore

7

Topography

25

GOLD (Global-scale Observations of the Limb and Disk)

3

WISE (Wide-field Infrared Survey Explorer)

11

Mesosphere

3

Night Sky Network

40

Flight Innovation

48

Tsunamis

3

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8

CYGNSS (Cyclone Global Navigation Satellite System)

1

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7

Planetary Nebulae

13

Saturn

29

John B. Herrington

1

MAF Announcements

1

Science of Space Exploration

1

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10

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7

Asian American and Native Hawaiian Pacific Islander Heritage

5

1

NASA Home & City

1

ExoMars

3

Technology Transfer & Spinoffs

49

Gemini III

1

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6

CoECI News

26

Earth Day

5

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1

Raja Chari

3

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2

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3

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6

STS-68

1

10

Blue Ghost (lander)

4

International Space Station (ISS)

571

7

Sounds & Ringtones

1

Subsonic Vehicle Technologies and Tools

4

Apollo 12

3

C-20A

3

MinXSS (Miniature X-ray Solar Spectrometer)

1

2

Supernovae

35

7

3

Heliophysics Division

68

Cell and Molecular Biology

2

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7

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4

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5

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14

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1

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4

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5

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8

Astrophysics Pioneers

3

Mars Exploration Rovers (MER)

4

Native American Heritage Month

7

3

29

Global Ecosystem Dynamics Investigation (GEDI)

2

5

Common Exploration Systems Development Division

4

Earth's Vital Signs

1

Pathfinding for Airspace with Autonomous Vehicles

1

Research Archive

1

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