swap_horiz THEMIS 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

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

7

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

8

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

9

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

8.6 Great

10

Cluster

Cluster is a space mission developed by the European Space Agency (ESA) to study the Earth's magnetosphere and its inter...

2000 Plasma Magnetosphere Esa

8.5 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

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

8.3 Great

13

Van Allen Probes

The Van Allen Probes were two identical NASA spacecraft launched together in 2012 to study the radiation belts surroundi...

Nasa Past Plasma Earth

8.2 Great

14

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

15

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

16

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

8.2 Great

17

Cluster II

Cluster II was a European Space Agency mission consisting of four identical spacecraft launched in 2000 to study Earth's...

Past Plasma Magnetosphere Formation

8.1 Great

18

2001 Mars Odyssey

2001 Mars Odyssey is a NASA spacecraft that entered orbit around Mars in 2001. Its instruments mapped the planet's surfa...

Mapping Active Nasa Mars

8.1 Great

19

MMS

The Magnetospheric Multiscale (MMS) mission is a NASA space mission launched in 2015 to study the Earth's magnetosphere....

Active Nasa Plasma Magnetosphere

7.9 Good

20

TRACERS

TRACERS is a NASA Explorer mission consisting of two small satellites designed to study magnetic reconnection in Earth's...

Active Nasa Aurora Magnetosphere

6.6 Fair