swap_horiz Mariner 2 Alternatives

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Voyager 2

Voyager 2 is a NASA-built spacecraft deployed in 1977. It’s notable for being the first to explore Uranus and Neptune pr...

Active Nasa Interstellar Outer Planets

9.15 Excellent

2

Voyager 1

Voyager 1 is an active NASA spacecraft launched in 1977. It undertook a flyby mission to Jupiter and Saturn. The probe a...

Active Nasa Interstellar Outer Planets

9.13 Excellent

3

Mariner 4

The Mariner 4 mission, launched by NASA in 1964, represents a pivotal moment in planetary exploration. This flyby spacec...

Imaging Nasa Mars Flyby

9.02 Excellent

4

Vostok 1

The Vostok 1 mission represents a pivotal moment in space exploration history. Launched by the Soviet Union in April 196...

Soviet Past Leo Crewed

8.96 Great

5

Apollo 8

The Apollo 8 mission involved a three-man NASA crew – Frank Borman, James Lovell, and William Anders – undertaking the f...

Lunar Nasa Apollo Past

8.90 Great

6

Pioneer Venus Multiprobe

The Pioneer Venus Multiprobe was a NASA space mission launched in 1978 to investigate the atmosphere of Venus. It consis...

Nasa 1978 Venus Atmospheric Probes

8.76 Great

7

Mars Exploration Rover Opportunity

The Opportunity rover was a NASA mission designed to study the geology of Mars’ Meridiani Planum region. Launched in 200...

Geology Nasa Mars Rover

8.70 Great

8

New Horizons

The New Horizons mission is an active NASA space probe studying the outer solar system. Launched in 2006, it achieved a...

Active Nasa Kuiper Belt Pluto

8.68 Great

9

Apollo 17

The Apollo 17 mission represents NASA’s concluding journey to the Moon within the Apollo program. Launched in December 1...

Lunar Nasa Apollo Past

8.67 Great

10

Viking 1

The Viking 1 mission involved both an orbiter and a lander deployed to Mars in 1975. It achieved the historic feat of de...

Nasa Mars Past Lander

8.63 Great

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Cosmic Background Explorer

The Cosmic Background Explorer (COBE) was a NASA space mission launched in 1989 to study the cosmic microwave background...

Survey Cosmology Nasa Microwave

8.62 Great

12

WMAP

The Wilkinson Microwave Anisotropy Probe (WMAP) was a NASA space mission that studied the cosmic microwave background ra...

Survey Cosmology Nasa Microwave

8.54 Great

13

Pioneer 10

NASA’s Pioneer 10 is a historic space probe launched in 1972. It achieved several significant milestones including being...

Nasa Deep Space Jupiter Past

8.45 Great

14

Pioneer 11

NASA’s Pioneer 11 is a historic space mission launched in 1973. It achieved the first-ever close flyby of Jupiter and su...

Nasa Jupiter Saturn Past

8.24 Great

15

Venera 7

The Venera 7 mission represents a pivotal achievement in space exploration. Launched by the Soviet Union in 1970, it ach...

Soviet Past Lander Venus

8.22 Great

16

Magellan

The Magellan mission utilized radar technology to study Venus. Launched by NASA in 1989, it provided the first comprehen...

Radar Nasa Past Venus

8.02 Great

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Surveyor 1

Surveyor 1 was a NASA spacecraft that became the first American probe to achieve a soft landing on the Moon, touching do...

Nasa Past Moon Lander

7.97 Good

18

Mariner 10

Mariner 10 was a robotic space probe launched by NASA in November 1973 to conduct planetary flybys of Venus and Mercury....

Nasa Past Mercury Venus

7.93 Good

19

Luna 1

Luna 1 was a Soviet spacecraft launched on January 2, 1959, as part of the Luna program. Also known as Mechta, it became...

Soviet Past Moon Firsts

7.74 Good

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Pioneer Venus Orbiter

Pioneer Venus Orbiter was a NASA spacecraft launched in 1978 to investigate Venus from orbit. It carried instruments for...

Nasa Past Atmosphere Venus

7.53 Good