swap_horiz Spektr-RG 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

Hayabusa2

The Hayabusa2 mission, developed by JAXA, successfully collected and returned samples from the asteroid Ryugu. This acti...

Active Asteroid Jaxa Sample Return

9.3 Excellent

6

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

7

Chang'e 4

Chang’e 4 is a Chinese space mission successfully deploying a lander and rover to explore the Moon’s far side. This achi...

China Active Moon Lander

9.2 Excellent

8

Tianwen-1

The Tianwen-1 mission represents China’s ambitious exploration of Mars. This active space project launched in July 2020...

China Active Mars Lander

9.0 Excellent

9

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

10

Mir

The Mir space station operated from 1986 to 2001. It was a pioneering Russian research facility assembled in low Earth o...

Russia Station Soviet Past

8.9 Great

11

Herschel

The Herschel Space Observatory was a European Space Agency mission launched in 2009. It operated primarily in infrared w...

Astronomy Telescope Infrared Past

8.8 Great

12

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

13

Rossi X-ray Timing Explorer

Rossi X-ray Timing Explorer was a NASA satellite launched in 1995 to study fast X-ray variability from black holes, neut...

Astronomy Nasa Past Timing

8.3 Great

14

Infrared Space Observatory

Infrared Space Observatory was an ESA telescope launched in 1995, notable for infrared spectroscopy and imaging of cool...

Astronomy Telescope Infrared Past

7.9 Good

15

NICER

NICER is a NASA X-ray telescope installed on the ISS in 2017, built to study neutron stars and test pulsar-based navigat...

Astronomy Active Nasa X Ray

7.8 Good

16

Spektr-R

Spektr-R was Russia's 2011 RadioAstron space radio telescope, notable for 10 m antenna interferometry with ground dishes...

Astronomy Russia Telescope Radio

7.7 Good

17

AstroSat

AstroSat is India's first dedicated multi-wavelength space observatory, launched by ISRO in 2015 to study cosmic sources...

Astronomy Telescope Active Multiwavelength

7.4 Good

18

Cheops

Cheops is an ESA space telescope launched in 2019 with Swiss leadership, built to measure the sizes of known exoplanets...

Survey Telescope Active Exoplanets

7.3 Good

19

XPoSat

XPoSat is ISRO's 2024 X-ray Polarimeter Satellite, India's first mission dedicated to measuring polarization from bright...

Astronomy Active X Ray Polarimetry

6.7 Fair

20

Hitomi

Hitomi was a Japanese X-ray astronomy satellite launched in 2016, notable for brief high-resolution observations before...

Astronomy Telescope Past X Ray

4.7 Poor