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)

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

Cold War Geostationary Satellite Communications

8.9 Great

8

Mercury Freedom 7

American spacecraft that carried Alan Shepard on May 5, 1961, making him the first American in space during a suborbital...

Cold War Nasa Suborbital Crewed

8.7 Great

9

Gemini 12

Final Gemini mission, launched November 1966 with Jim Lovell and Buzz Aldrin, who successfully demonstrated productive e...

Cold War Nasa Crewed Earth Orbit

8.6 Great

10

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

11

Space Shuttle Atlantis

Space Shuttle orbiter that flew 33 missions from 1985 to 2011, including the final Space Shuttle flight, STS-135, and mu...

Reusable Nasa Shuttle Crewed

8.4 Great

12

MMS (Magnetospheric Multiscale Mission)

NASA's Magnetospheric Multiscale Mission, launched in 2015, uses four identical spacecraft flying in close formation to...

Nasa Current Magnetosphere Probe

8.3 Great

13

Vostok 2

Soviet spacecraft that carried Gherman Titov on August 6, 1961, completing 17 orbits and making him the second human to...

Cold War Endurance Soviet Crewed

8.2 Great

14

Soyuz-T

Soviet modernized crewed spacecraft introduced in 1979, featuring improved computers and life support, and restoring the...

Cold War Soviet Transport Crewed

8.2 Great

15

Space Shuttle Endeavour

NASA's fifth and youngest Space Shuttle orbiter, built to replace Challenger and completing 25 spaceflights between 1992...

Reusable Nasa Shuttle Crewed

8.2 Great

16

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

17

Gemini 3

First crewed Gemini mission, launched March 23, 1965 with Gus Grissom and John Young, demonstrating the first manual orb...

Cold War Two Person Nasa Crewed

8.0 Great

18

Vostok 5

Soviet spacecraft that carried Valery Bykovsky beginning June 14, 1963, setting a solo spaceflight endurance record of n...

Cold War Endurance Soviet Crewed

7.9 Good

19

OAO-2

NASA Orbiting Astronomical Observatory 2, launched in 1968, the first successful space-based ultraviolet telescope, prov...

Cold War Science Nasa Observatory

7.8 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