swap_horiz New Horizons Alternatives

1

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

Curiosity Mars Rover

The Curiosity rover is an active NASA mission exploring Mars from Gale Crater. Launched in 2011, it investigates the pla...

Geology Active Nasa Mars

8.59 Great

5

Perseverance Mars Rover

The Perseverance rover is an active NASA mission exploring Mars. It operates within Jezero Crater, analyzing the geology...

Active Nasa Mars Rover

8.48 Great

6

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

7

Lunar Reconnaissance Orbiter

The Lunar Reconnaissance Orbiter (LRO) is a NASA spacecraft currently orbiting the Moon. Launched in 2009, it provides d...

Mapping Active Nasa Moon

8.30 Great

8

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

9

Mariner 2

The Mariner 2 spacecraft represents a pivotal moment in space exploration. Launched by NASA in 1962, it achieved the fir...

Nasa Past Venus Firsts

8.15 Great

10

Mars Reconnaissance Orbiter

The Mars Reconnaissance Orbiter is a NASA spacecraft orbiting Mars since 2006. It provides high-resolution imaging of th...

Imaging Active Nasa Mars

8.11 Great

11

Landsat 8

Landsat 8 is an active Earth observation satellite operated by NASA and the USGS. This mission continues a decades-long...

Imaging Active Nasa Earth

8.05 Great

12

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

13

Solar Orbiter

Solar Orbiter is a spacecraft developed by the European Space Agency with NASA participation to study the Sun and the in...

Solar Active Nasa Orbiter

7.89 Good

14

Mariner 7

Mariner 7 was a NASA robotic spacecraft launched in 1969 to conduct a flyby of Mars alongside its companion mission, Mar...

Imaging Nasa Mars Flyby

7.76 Good

15

Mariner 6

Mariner 6 was a NASA spacecraft launched in February 1969 to perform a flyby of Mars. The mission provided close-up imag...

Imaging Nasa Mars Flyby

7.72 Good

16

ICESat-2

ICESat-2 (Ice, Cloud, and land Elevation Satellite 2) is an Earth observation satellite launched by NASA in 2018 as a fo...

Laser Active Nasa Ice

7.69 Good

17

ACE

The Advanced Composition Explorer (ACE) is a NASA space mission designed to study the composition of matter from the sol...

Active Nasa Solar Wind Heliophysics

7.64 Good

18

Landsat 9

Launched in September 2021, Landsat 9 is an Earth observation satellite jointly managed by NASA and the U.S. Geological...

Imaging Active Nasa Earth

7.56 Good

19

MAVEN

MAVEN, short for Mars Atmosphere and Volatile Evolution, is a NASA orbiter launched in 2013 and placed into orbit around...

Active Nasa Mars Atmosphere

7.53 Good

20

Europa Clipper

Europa Clipper is a NASA robotic mission designed to investigate Jupiter's moon Europa, whose ice-covered surface may co...

Active Nasa Jupiter Europa

6.67 Fair