swap_horiz SMAP 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

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

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

9.3 Excellent

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

9.2 Excellent

6

Landsat 5

Landsat 5 is a NASA space mission providing continuous global imagery since its launch in 1984. This satellite’s extende...

Imaging Nasa Earth Landsat

9.1 Excellent

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

9.0 Excellent

8

Landsat 1

Landsat 1 is an American Earth observation satellite that began continuous monitoring of our planet in 1972. Launched by...

Imaging Nasa Earth Landsat

8.9 Great

9

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

8.8 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

8.8 Great

11

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

8.4 Great

12

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

8.2 Great

13

GRACE-FO

GRACE-FO, the Gravity Recovery and Climate Experiment Follow-On, is a joint NASA and German Research Centre for Geoscien...

Active Nasa Gravity Earth

8.2 Great

14

SWOT

SWOT (Surface Water and Ocean Topography) is a satellite jointly developed by NASA and CNES, the French space agency, wi...

Water Active Nasa Earth

7.9 Good

15

CloudSat

CloudSat was a NASA Earth observation satellite launched in 2006 as part of the agency's Earth System Science Pathfinder...

Radar Nasa Past Earth

7.8 Good

16

OCO-2

OCO-2 (Orbiting Carbon Observatory-2) is a NASA Earth science satellite launched on 2 July 2014 to measure atmospheric c...

Climate Active Carbon Nasa

7.7 Good

17

PACE

PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) is an active NASA Earth-observing satellite launched into a sun-synchro...

Ocean Active Nasa Atmosphere

7.4 Good

18

TIMED

TIMED (Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics) is a NASA heliophysics mission launched in 2001 t...

Active Nasa Atmosphere Earth

7.3 Good

19

CYGNSS

CYGNSS, the Cyclone Global Navigation Satellite System, is a NASA Earth-observation mission made up of eight microsatell...

Active Nasa Earth Smallsat

7.1 Good

20

Biomass

Biomass is an ESA Earth Explorer satellite mission launched on 29 April 2025 aboard a Vega-C rocket from French Guiana....

Active Radar Forest Earth

6.9 Fair