swap_horiz Explorer 1 Alternatives

1

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

2

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

3

Vostok 6

The Vostok 6 was a Soviet crewed spacecraft responsible for carrying cosmonaut Valentina Tereshkova into Earth orbit on...

Cold War Soviet First Woman Crewed

9.2 Excellent

4

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

5

Apollo Command/Service Module

The Apollo Command/Service Module was a critical component of NASA’s manned lunar missions during the Cold War era. It c...

Cold War Nasa Moon Crewed

9.2 Excellent

6

Apollo Lunar Module

The Apollo Lunar Module was a specialized spacecraft developed by NASA to enable crewed landings on the Moon. This two-s...

Cold War Nasa Moon Crewed

9.2 Excellent

7

Early Bird (Intelsat I)

Intelsat I, also known as Early Bird, was the first commercial geostationary communications satellite. Built by the Hugh...

Cold War Geostationary Satellite Communications

8.9 Great

8

Mercury Freedom 7

Mercury-Redstone 3, utilizing the Freedom 7 spacecraft, was the first crewed space mission in United States history. Lau...

Cold War Nasa Suborbital Crewed

8.7 Great

9

Gemini 12

Gemini 12 was a 1966 crewed spaceflight and the final mission of NASA's Project Gemini. Launched in November 1966, the s...

Cold War Nasa Crewed Earth Orbit

8.6 Great

10

Vanguard 1

Vanguard 1 is an American satellite launched on March 17, 1958, as part of the U.S. Navy's Vanguard project. It was the...

Cold War Solar Powered Satellite Nasa

8.5 Great

11

Space Shuttle Atlantis

Space Shuttle Atlantis is a retired NASA orbiter that completed 33 space missions during its operational lifetime from 1...

Reusable Nasa Shuttle Crewed

8.4 Great

12

MMS (Magnetospheric Multiscale Mission)

NASA's Magnetospheric Multiscale Mission (MMS) is a four-spacecraft constellation launched on March 12, 2015, to study m...

Nasa Current Magnetosphere Probe

8.3 Great

13

Vostok 2

Vostok 2 was a Soviet crewed spaceflight launched on August 6, 1961, carrying cosmonaut Gherman Titov. The mission made...

Cold War Endurance Soviet Crewed

8.2 Great

14

Soyuz-T

The Soyuz-T was a Soviet crewed spacecraft developed as an modernization of the earlier Soyuz model, conducting its init...

Cold War Soviet Transport Crewed

8.2 Great

15

Space Shuttle Endeavour

Space Shuttle Endeavour is a retired NASA orbiter that served as the fifth and final operational vehicle in the Space Sh...

Reusable Nasa Shuttle Crewed

8.2 Great

16

Sputnik 2

Sputnik 2 was the second spacecraft launched into Earth orbit by the Soviet Union, lifting off on November 3, 1957. The...

Cold War Satellite Soviet Earth Orbit

8.1 Great

17

Gemini 3

Gemini 3 was the first crewed mission of NASA's Project Gemini, successfully launching on March 23, 1965. The two-person...

Cold War Two Person Nasa Crewed

8.0 Great

18

Vostok 5

Vostok 5 was a Soviet crewed spacecraft launched on June 14, 1963, carrying cosmonaut Valery Bykovsky. It flew concurren...

Cold War Endurance Soviet Crewed

7.9 Good

19

Vostok 3

Vostok 3 was a Soviet crewed spaceflight launched on August 11, 1962, carrying cosmonaut Andrian Nikolayev into Earth or...

Cold War Soviet Crewed Earth Orbit

7.8 Good

20

Sputnik 3

Sputnik 3 was a Soviet scientific satellite launched into low Earth orbit on May 15, 1958. The conical, unmanned spacecr...

Cold War Science Satellite Soviet

7.2 Good