swap_horiz SAMPEX Alternatives

1

CORONA (KH-4)

KH-4 belongs to CORONA, the classified American satellite reconnaissance program developed by the CIA and the Air Force...

1960S Reconnaissance Leo Cia Usaf

9.15 Excellent

2

Syncom 3

Syncom 3, launched by NASA in 1964, was the world's first geostationary satellite, positioned over the Pacific Ocean and...

Geostationary 1960S Nasa Communications

9.10 Excellent

3

TRMM

Launched in 1997, the Tropical Rainfall Measuring Mission was a joint American and Japanese effort to study tropical and...

1990S Nasa Jaxa Precipitation Low Inclination

9.05 Excellent

4

IKONOS

IKONOS helped establish the market for detailed commercial satellite imagery after its launch by Space Imaging in 1999....

High Resolution 1990S Polar Orbit Commercial Imagery

8.85 Great

5

KH-9 Hexagon

The KH-9 Hexagon was a series of large photoreconnaissance satellites operated by the US National Reconnaissance Office...

1970S Reconnaissance Leo Declassified

8.85 Great

6

IKONOS-2

IKONOS-2 was a commercial Earth observation satellite launched in 1999 by Space Imaging (later GeoEye). It holds the dis...

High Resolution Commercial 1990S Polar Orbit

8.85 Great

7

Seasat

Seasat was a NASA ocean-observing satellite launched in 1978, the first spacecraft dedicated to remote sensing of Earth'...

1970S Nasa Sar Polar Orbit

8.80 Great

8

China Space Station (Tiangong)

China Space Station (Tiangong) is China's permanently crewed modular orbital station, with its core Tianhe module launch...

Modular 2020S Leo Crewed

8.75 Great

9

NIMBUS-7

Nimbus-7 was an American meteorological research satellite launched by NASA in 1978 into a sun-synchronous orbit. As the...

Historic 1970S Nasa Earth Observation

8.75 Great

10

ATS-6

ATS-6, launched by NASA in 1974, was the world's first experimental direct-broadcast educational television satellite, p...

Experimental Geostationary 1970S Nasa

8.65 Great

11

MMS (Magnetospheric Multiscale)

The Magnetospheric Multiscale (MMS) mission is a NASA space physics observatory consisting of four identical satellites...

Nasa 2010S Magnetosphere Elliptical Orbit

8.65 Great

12

Van Allen Probes (RBSP)

The Van Allen Probes, originally named the Radiation Belt Storm Probes, were a pair of NASA spacecraft launched in 2012...

Nasa 2010S Elliptical Orbit Radiation Belt

8.55 Great

13

SEASTAR (OrbView-2)

OrbView-2, also known as SeaStar, was a NASA-sponsored Earth observation satellite launched in 1997 to monitor the globa...

1990S Polar Orbit Ocean Color Nasa Orbimage

8.45 Great

14

THEMIS (constellation)

THEMIS (Time History of Events and Macroscale Interactions during Substorms) is a NASA mission comprising five identical...

2000S Nasa Magnetosphere Leo Heo

8.35 Great

15

Orbiting Carbon Observatory-2

The Orbiting Carbon Observatory-2 (OCO-2) is a NASA satellite launched in 2014 to measure global atmospheric carbon diox...

Nasa 2010S CO2 Polar Orbit

8.35 Great

16

UARS

UARS (Upper Atmosphere Research Satellite) was a NASA satellite deployed from Space Shuttle Discovery during the STS-48...

1990S Nasa Atmosphere Leo

8.30 Great

17

OSCAR-1

OSCAR-1 was the first amateur-built satellite to reach orbit, launched on December 12, 1961 as a secondary payload aboar...

1960S Leo Amateur Radio Amsat

8.30 Great

18

SORCE

SORCE (Solar Radiation and Climate Experiment) was a NASA satellite launched on January 25, 2003 aboard a Pegasus XL roc...

Climate 2000S Nasa Leo

8.25 Great

19

GEDI (on ISS)

GEDI (Global Ecosystem Dynamics Investigation) is a NASA lidar instrument mounted on the exterior of the International S...

Nasa Lidar 2010S Iss Mounted

8.25 Great

20

ERBS

The Earth Radiation Budget Satellite (ERBS) was a NASA scientific spacecraft launched from the Space Shuttle Challenger...

Climate 1980S Nasa Leo

8.20 Great