swap_horiz NuSTAR 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

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

XMM-Newton

The XMM-Newton observatory, operated by ESA, observes the universe primarily in X-rays. Its large telescope allows for d...

High Energy Space Based X Ray Photometry

8.9 Great

11

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

12

WISE

The Wide-field Infrared Survey Explorer (WISE), launched by NASA in 2009, is a space telescope that completed an astrono...

Survey All Sky Nasa Infrared

8.8 Great

13

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

14

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

15

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

16

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

17

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

18

STEREO

STEREO is a solar observation mission launched by NASA in 2006 that uses two nearly identical spacecraft to provide ster...

Solar Nasa Space Based Stereoscopic

8.3 Great

19

IXPE

The Imaging X-ray Polarimetry Explorer is a NASA astrophysics satellite launched in 2021, notable for being the first de...

Nasa Space Based X Ray Esa

8.2 Great

20

INTEGRAL

INTEGRAL, launched by the European Space Agency in 2002, is a dedicated gamma-ray observatory designed to observe celest...

High Energy Space Based Gamma Ray X Ray

7.8 Good