swap_horiz TOPEX/Poseidon Alternatives

1

Vostok Spacecraft

The Vostok spacecraft represents a pivotal moment in human spaceflight history. Developed during the Soviet Union’s Cold...

Vintage Cold War Engineering Historical

9.3 Excellent

2

Sputnik 1

Sputnik 1 was a polished metal sphere with radio transmitters, launched by the Soviet Union in 1957. Its significance li...

Cold War Satellite Soviet First

9.2 Excellent

3

Explorer 1

Explorer 1 was the first artificial satellite successfully placed in Earth orbit by the United States. Launched in 1958,...

Cold War Satellite Nasa Earth Orbit

9.2 Excellent

4

Telstar 1

Telstar 1 was a pioneering American communications satellite launched in 1962 by AT&T. Its significance lies in being th...

Cold War Att Satellite Communications

9.2 Excellent

5

Mercury Friendship 7

The Mercury Friendship 7 was a single-seat capsule designed for crewed orbital missions during the Cold War. It carried...

Cold War Nasa First Us Orbit Crewed

9.2 Excellent

6

Ingenuity helicopter

The Ingenuity helicopter is a rotorcraft developed by NASA for exploration on Mars. It represents a groundbreaking achie...

Helicopter Nasa Mars First Flight

9.2 Excellent

7

Early Bird (Intelsat I)

First commercial geostationary communications satellite, launched April 1965, providing the first reliable transatlantic...

Cold War Geostationary Satellite Communications

8.9 Great

8

Vanguard 1

American satellite launched March 17, 1958, the oldest human-made object still orbiting Earth and the first satellite po...

Cold War Solar Powered Satellite Nasa

8.5 Great

9

WISE / NEOWISE

NASA Wide-field Infrared Survey Explorer launched in 2009 that mapped the entire sky in infrared before being repurposed...

Nasa Infrared Observatory Completed

8.5 Great

10

GOES-16

NOAA geostationary weather satellite launched in 2016 serving the Eastern US and Atlantic, featuring advanced imagery, r...

Geostationary Satellite Weather Current

8.5 Great

11

IUE (International Ultraviolet Explorer)

Joint NASA/ESA/UK International Ultraviolet Explorer launched in 1978 that operated for nearly 18 years, providing ultra...

Science Observatory Completed Ultraviolet

8.3 Great

12

Jason-1

A joint NASA/CNES ocean altimetry satellite launched in 2001 as the direct successor to TOPEX/Poseidon, continuing preci...

Ocean Satellite Completed Altimetry

8.2 Great

13

Sputnik 2

Soviet spacecraft launched November 3, 1957, that carried the dog Laika, making her the first living animal to orbit Ear...

Cold War Satellite Soviet Earth Orbit

8.1 Great

14

Jason-2

A joint NASA/CNES/EUMETSAT/NOAA satellite launched in 2008 that extended the continuous sea-surface height record initia...

Ocean Satellite Completed Altimetry

8.1 Great

15

GPM Core Observatory

NASA/JAXA Global Precipitation Measurement Core Observatory launched in 2014 to measure global rain and snowfall rates,...

Satellite Weather Current Nasa Jaxa

8.0 Great

16

Jason-3

A joint NASA/CNES/EUMETSAT/NOAA satellite launched in 2016 that continues the multi-decadal global sea-surface height me...

Ocean Satellite Current Altimetry

8.0 Great

17

ERS-1

ESA's first Earth Remote Sensing satellite, launched in 1991, used synthetic aperture radar to map ice sheets, oceans, a...

Cold War Satellite Radar Esa

7.8 Good

18

ERS-2

ESA's second Earth Remote Sensing satellite, launched in 1995, built on ERS-1 and added instruments to monitor stratosph...

Satellite Radar Completed Esa

7.8 Good

19

Solar Maximum Mission

NASA spacecraft launched in 1980 to study solar flares at solar maximum; it was notably repaired in orbit by Space Shutt...

Solar Nasa Observatory Sun

7.7 Good

20

Sputnik 3

Soviet scientific satellite launched May 1958, designed to study Earth's upper atmosphere, ionosphere, and near-Earth sp...

Cold War Science Satellite Soviet

7.2 Good