NewAthena is an observatory that is currently planned by ESA for 2038, to be launched into orbit at the L1 point. It should be...

Einstein Probe is a Chinese mission launched on 9th January 2024 into a low Earth orbit. It has a Wide field telescope (WXT)...

The Roentgen Satellite, ROSAT, a Germany/US/UK collaboration, was launched on June 1, 1990 into a low Earth orbit and operated...

Spectrum-Roentgen-Gamma  (SRG) is a German-Russian mission launched on July 13 2019, and placed in a halo orbit around the L2...

The Space-based multi-band astronomical Variable Objects Monitor (SVOM) is a French-Chinese mission that was launched on 22nd...

The Nuclear Spectroscopic Telescope Array (NuSTAR) is a small NASA mission launched on 13th June 2012 into a low Earth orbit. It...

Integral was a European Space Agency mission that was active between 17 October 2002 and 28th February 2025. It functioned in a...

The Neutron star Interior Composition Explorer (NASA) mission was launched on the 3rd June 2017 and installed on the...

The X-Ray Imaging and Spectroscopy Mission (XRISM) is a JAXA/NASA collaborative mission, with ESA participation. XRISM was...

Swift was launched by NASA on 20th November 2004 in a low Earth orbit which allows for roughly hour long observations of a...

Chandra is a NASA mission launched on 23rd July 1999 in an elliptical orbit that allows observations of a source for up to 55...

XMM-Newton is an ESA cornerstone mission that was launched on 10th December 1999, in an elliptical orbit that allows continuous...