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

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

11

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

12

Suzaku (ASTRO-EII)

Suzaku, originally designated ASTRO-EII, was a Japanese X-ray astronomy satellite launched in 2005 and operated through...

Astronomy 2005 X Ray Jaxa

8.2 Great

13

Infrared Space Observatory

The Infrared Space Observatory (ISO) was a European Space Agency space telescope launched by an Ariane 4 rocket in Novem...

Astronomy Telescope Infrared Past

7.9 Good

14

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

15

Spektr-R

Spektr-R was a Russian space radio telescope launched on 18 July 2011 as the centerpiece of the RadioAstron mission. It...

Astronomy Russia Telescope Radio

7.7 Good

16

AstroSat

AstroSat is an Indian space observatory designed to study astronomical sources across ultraviolet and X-ray wavelengths....

Astronomy Telescope Active Multiwavelength

7.4 Good

17

Cheops

Cheops (Characterising Exoplanet Satellite) is a European Space Agency space telescope launched in December 2019, develo...

Survey Telescope Active Exoplanets

7.3 Good

18

XPoSat

XPoSat, the X-ray Polarimeter Satellite, is an Indian space observatory launched by ISRO on January 1, 2024, aboard the...

Astronomy Active X Ray Polarimetry

6.7 Fair

19

Hitomi

Hitomi, also designated ASTRO-H, was a Japanese X-ray astronomy satellite launched by JAXA on 17 February 2016. Develope...

Astronomy Telescope Past X Ray

4.7 Poor

20

Hitomi (ASTRO-H)

Hitomi (ASTRO-H) was a Japanese X-ray astronomy satellite developed by JAXA with NASA cooperation, launched on 17 Februa...

Astronomy 2016 X Ray Jaxa

3.2 Poor