Proposed space telescopes

planned NASA infrared space observatory

The Xuntian (; lit: Tour of Heaven) or Chinese Space Station Telescope (CSST) () is currently under development.

Spektr-UV, also known as World Space Observatory-Ultraviolet (WSO-UV), is a proposed ultraviolet space telescope intended for work in the 115 nm to 315 nm wavelength range. It is an international project led by Russia (Roscosmos), with participation from Spain and Japan. The launch had initially been planned for 2007, but has since been continually delayed; , the launch is expected to take place no earlier than 2031 atop an Angara A5M rocket from Vostochny Cosmodrome.

planned space telescope to directly image and spectroscopically analyse exoplanets

LiteBIRD (Lite (Light) satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection) is a planned small space observatory that aims to detect the footprint of the primordial gravitational wave on the cosmic microwave background (CMB) in a form of polarization pattern called B-mode.

ULTRASAT (Ultraviolet Transient Astronomy Satellite) is a space telescope in a smallsat format that will detect and monitor transient astronomical events in the near-ultraviolet (220–280 nm) spectral region. ULTRASAT will observe a large patch of sky with a 210 square degrees field of view, alternating every six months between the southern and northern hemisphere. The satellite is planned to be launched into a geosynchronous orbit in late 2027. All ULTRASAT data will be transmitted to the ground in real time. Upon detection of a transient event, ULTRASAT will provide alerts within 20 minu

The TOLIMAN (Telescope for Orbit Locus Interferometric Monitoring of our Astronomical Neighbourhood) space telescope is a low-cost mission concept aimed at detecting of exoplanets via the astrometry method, and specifically targeting the Alpha Centauri system. TOLIMAN will focus on stars within 10 parsecs (32.6 light years) of the Sun. The telescope is still under construction. The mission will involve scientists of the University of Sydney, Saber Astronautics in Australia, Breakthrough Initiatives, and NASA's Jet Propulsion Laboratory.