swap_horiz WISE Alternatives

1

Cassini-Huygens

The Cassini-Huygens mission, operated by NASA and ESA, was a space-based observatory dedicated to studying Saturn and it...

Decommissioned Nasa Planetary Space Based

9.8 Brilliant

2

Gaia

The Gaia observatory is a space-based mission operated by the European Space Agency. It meticulously surveys our galaxy,...

Survey Optical Space Based Astrometry

9.7 Brilliant

3

Kepler Space Telescope

The Kepler Space Telescope was a NASA observatory launched in 2009. It monitored over 150,000 stars for dips in brightne...

Decommissioned Optical Nasa Space Based

9.6 Brilliant

4

Parker Solar Probe

The Parker Solar Probe is a NASA observatory spacecraft investigating the Sun’s outer atmosphere, the corona. Launched i...

Solar Nasa Space Based Heliophysics

9.6 Brilliant

5

Galileo spacecraft

The Galileo spacecraft was a NASA observatory designed for planetary exploration of Jupiter and its moons. Launched in 1...

Decommissioned Nasa Planetary Jupiter

9.4 Excellent

6

SOHO

SOHO is a space-based observatory operated jointly by NASA and the European Space Agency. It monitors the Sun’s activity...

Solar Nasa Space Based Esa

9.3 Excellent

7

Spitzer Space Telescope

The Spitzer Space Telescope was a NASA space-based observatory operating from 2003 to 2020. It utilized infrared light t...

Survey Decommissioned Nasa Infrared

9.2 Excellent

8

Fermi Gamma-ray Space Telescope

The Fermi Gamma-ray Space Telescope is a NASA observatory orbiting Earth. It detects high-energy gamma rays, providing i...

Survey High Energy Nasa Space Based

9.1 Excellent

9

Herschel Space Observatory

The Herschel Space Observatory is a decommissioned space-based observatory operated by the European Space Agency (ESA)....

Decommissioned Infrared Space Based Esa

9.1 Excellent

10

Solar Dynamics Observatory

The Solar Dynamics Observatory (SDO) is a space-based observatory operated by NASA. It provides continuous ultraviolet i...

Solar Nasa Space Based Heliophysics

9.1 Excellent

11

Neil Gehrels Swift Observatory

The Neil Gehrels Swift Observatory is a NASA spacecraft dedicated to studying high-energy astrophysical events. Launched...

Nasa Space Based Gamma Ray X Ray

9.0 Excellent

12

Compton Gamma Ray Observatory

The Compton Gamma Ray Observatory was a NASA space-based observatory that operated from 1991 until its decommissioning i...

Decommissioned High Energy Nasa Space Based

8.9 Great

13

eROSITA

eROSITA is a German observatory utilizing a space-based x-ray telescope. Launched in 2019 as part of the Spektr-RG missi...

Germany Survey All Sky Space Based

8.9 Great

14

Roman Space Telescope

The Nancy Grace Roman Space Telescope is a NASA infrared observatory scheduled for launch in 2027 to study dark energy a...

Survey Optical Nasa Infrared

8.8 Great

15

ROSAT

ROSAT was a German X-ray satellite launched in 1990 that produced the first all-sky survey of cosmic X-ray sources using...

Germany Decommissioned All Sky Space Based

8.6 Great

16

Uhuru

Uhuru, launched by NASA in 1970, was the first dedicated X-ray astronomy satellite and successfully conducted the first...

Historical Nasa Space Based X Ray

8.6 Great

17

NuSTAR

The Nuclear Spectroscopic Telescope Array (NuSTAR), launched by NASA in 2012, is the first space telescope capable of fo...

High Energy Nasa Space Based Hard X Ray

8.5 Great

18

Einstein Observatory

The Einstein Observatory was a NASA X-ray telescope launched in 1978 that became the first imaging X-ray telescope to be...

Historical Nasa Space Based X Ray

8.5 Great

19

XRISM

XRISM is a JAXA and NASA X-ray astronomy satellite launched in 2023, designed to measure extreme high-energy phenomena u...

Nasa Space Based Spectroscopy X Ray

8.5 Great

20

RXTE

The Rossi X-ray Timing Explorer was a NASA satellite launched in 1995 to observe variability in X-ray emissions from bla...

Decommissioned Nasa Space Based Timing

8.4 Great