AGIS:

The Advanced Gamma-ray Imaging System (AGIS) is a next-generation ground-based gamma-ray observatory being planned in the U.S. The AGIS project mirrors the Cherenkov Telescope Array project being discussed in Europe.

Website: http://gamma1.astro.ucla.edu/agis/index.php/Main_Page

ARGOS-X:

The information for this mission is currently being updated. Sorry for the inconvenience.

Website: n/a

ASTROSAT:

ASTROSAT will be a multi-wavelength astronomy mission on an IRS-class satellite in a 650-km, near-equatorial orbit. It is currently scheduled to be launched by the Indian launch vehicle PSLV from the Sriharikota launch centre in April 2009. The expected operating life time of the satellite will be five years.

Website: http://meghnad.iucaa.ernet.in/~astrosat/

Chandra:

Since its launch on July 23, 1999, the Chandra X-ray Observatory has been NASA's flagship mission for X-ray astronomy, taking its place in the fleet of "Great Observatories." Chandra detects and images X-ray sources that are billions of light years away.

Website: http://chandra.harvard.edu/pub.html

Constellation-X:

The Constellation-X Observatory is a combination of several X-ray telescopes working in unison to generate the observing power of one giant telescope.

Website: http://constellation.gsfc.nasa.gov/

eRosita:

extended ROentgen Survey with an Imaging Telescope Array

Together with the all-sky-monitor "LOBSTER" (GB) and the high-energy telescope "ART" (Ru), eROSITA will fly on the Russian satellite Spectrum-X-Gamma, which will be launched with a Soyus-2 rocket from Kourou (fr. Guyana) in 2009. The mission eROSITA should perform the first imaging all-sky survey in the medium energy X-ray range up to 10 keV with an unprecedented spectral and angular resolution.

PDF: http://www.mpe.mpg.de/projects.html#erosita

EXIST:

(Energy X-Ray Imaging Survey Telescope)

The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed hard X-ray imaging all-sky deep survey mission and was recommended by the 2001 Report of the Decadal Survey. It is a strong candidate to be the Black Hole Finder Probe, one of the three "Einstein Probes" in the Beyond Einstein Program described in the current Roadmap for NASA Space Science missions. EXIST is based on proven technology and could be launched by ~2015.

Website: http://exist.gsfc.nasa.gov/

Generation-X:

The Generation-X Vision Mission is an X-ray telescope designed to study the new frontier of astrophysics: the birth and evolution of the first stars, galaxies and black holes in the early Universe.

Website: http://www.cfa.harvard.edu/hea/genx.html

HXMT:

The Hard X-ray Modulation Telescope (HXMT) is a collimated hard X-ray (20-200 keV) telescope with the highest sensitivity and spatial resolution power in the world. It will perform an all-sky hard X-ray survey, in which about 1000 new hard X-ray sources will be discovered, and sensitive pointed observations of important cosmic X-ray sources including black holes and neutron stars.

Website: http://www.hxmt.cn/english/

IXPE:

The information for this mission is currently being updated. Sorry for the inconvenience.

Website: n/a

LOBSTER:

The scientific impact of the LOBSTER-ISS spans all of astronomy - from studies of the X-ray emission of comets to stars and to quasars, from regular X-ray binaries to erratic stellar transients, from the energetically gentle fluctuations in the hot outer regions of stars to the catastrophic events of supernovae and the enigmatic gamma-ray bursts (GRBs).

Website: http://www.src.le.ac.uk/projects/lobster/

MAXIM:

The MAXIM concept utilizes X-ray interferometry to achieve micro-arcsecond angular resolution. A NASA mission built around this concept could achieve resolution as fine as 300 nano-arcseconds. This resolution is 3,000 times finer than VLBI and 300,000 times finer than HST.

Website: http://maxim.gsfc.nasa.gov/docs/vision.html

NeXT:

NeXT, the New X-ray Telescope project, is a next-generation X-ray astronomy satellite that the Japanese X-ray astronomy group is proposing to ISAS.

Website: http://www.astro.isas.ac.jp/future/NeXT/

NICE:

The information for this mission is currently being updated. Sorry for the inconvenience.

Website: n/a

NuSTAR:

The Nuclear Spectroscopic Telescope Array is a pathfinder mission that will open the high energy X-ray sky for sensitive study for the first time.

Website: http://www.nustar.caltech.edu/

Simbol-X:

Simbol X is a new-technology har X-ray (0.5-80keV) focussing telescope that will provide orders of magnitude improvement in angular resolution and sensitivity compared to the non-focussing instruments that have operated so far in this crucial energy band.

Website: http://www.asdc.asi.it/simbol-x/

SXG:

Spectrum-X-Gamma (SXG) is an international high-energy astrophysics observatory which is being built under the leadership of the Space Research Institute at Moscow (IKI).

Website: http://hea.iki.rssi.ru/SXG/SXG-home.html

XEUS:

New generation, space based x-ray observatory dedicated to investigations on the evolution of the universe at higher energies and based on a 2 spacecraft formation concept.

Website: http://sci.esa.int/xeus