swap_horiz Swift 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

10.0 Brilliant

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

9.9 Brilliant

3

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

9.7 Brilliant

4

Mars Science Laboratory (Curiosity)

The Mars Science Laboratory is a NASA robotic space mission that landed the car-sized Curiosity rover in Gale Crater on...

Nasa Mars Rover 2011

9.7 Brilliant

5

Mars 2020 (Perseverance)

Mars 2020 is an ongoing NASA space mission that successfully landed the Perseverance rover in Mars's Jezero Crater in Fe...

2020 Nasa Mars Rover

9.7 Brilliant

6

OSIRIS-REx (Bennu Sample Return)

OSIRIS-REx is a NASA spacecraft mission designed to travel to the near-Earth asteroid 101955 Bennu, collect a surface sa...

2023 Nasa Asteroid Earth Return

9.7 Brilliant

7

STS-61 Hubble Servicing

STS-61 was a 1993 NASA Space Shuttle Endeavour mission dedicated to servicing the Hubble Space Telescope. As the first s...

Nasa 1993 Shuttle Hubble Repair

9.6 Brilliant

8

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

9.5 Brilliant

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

9.4 Excellent

10

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

9.4 Excellent

11

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

9.4 Excellent

12

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

9.4 Excellent

13

Friendship 7 (Mercury-Atlas 6)

Friendship 7 was the spacecraft used in NASA's Mercury-Atlas 6 mission, launched on February 20, 1962. Aboard the capsul...

Orbital Nasa 1962 Crewed

9.4 Excellent

14

WMAP

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

Survey Cosmology Nasa Microwave

9.3 Excellent

15

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

9.3 Excellent

16

OSIRIS-REx

The OSIRIS-REx spacecraft undertook a NASA mission to study the asteroid Bennu. Launched in 2016, it successfully collec...

Nasa Past Asteroid Sample Return

9.3 Excellent

17

Ingenuity Mars Helicopter

The Ingenuity Mars Helicopter is a small rotorcraft developed by NASA for exploration on Mars. It achieved unprecedented...

Helicopter Technology Nasa Mars

9.2 Excellent

18

Mariner 9

The Mariner 9 mission involved a NASA-operated spacecraft that orbited Mars from 1971 to 1973. It is significant as the...

Mapping Nasa Mars Orbiter

9.2 Excellent

19

Rossi X-ray Timing Explorer

The Rossi X-ray Timing Explorer (RXTE) was an artificial satellite launched by NASA on December 30, 1995, to observe ast...

Astronomy Nasa Past Timing

8.3 Great

20

NICER

The Neutron star Interior Composition Explorer (NICER) is an X-ray telescope developed by NASA and installed on the exte...

Astronomy Active Nasa X Ray

7.8 Good