Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy

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Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy (THEIA) is a NASA-proposed 4-metre optical/ultraviolet space telescope that would succeed the Hubble Space Telescope and complement the infrared-James Webb Space Telescope. THEIA would use a 40-metre occulter to block starlight so as to directly image exoplanets.

References [edit]

THEIA Website

v t e Space observatories

Current	AGILE AMS-02 Chandra COROT Fermi GALEX Hinode (Solar-B) HiRISE Hubble IBEX INTEGRAL Kepler MAXI MOST NEOSSat NuSTAR Odin PAMELA Planck UniBRITE-1 R/HESSI SDO SOHO SOLAR Spektr-R Spitzer Suzaku (Astro-EII) Swift XMM-Newton

Planned	Astrosat (2013) IRIS (2013) BRITE Constellation (2013+) GAIA (2013) SPRINT-A (2013) Nano-JASMINE (2013) Astro-H (2014) Spektr-RG (2014) HXMT (2014–2016) World Space Observatory (2016) NICER (2016) CHEOPS (2017) TESS (2017) James Webb (JWST) (2018+) SOLAR-C (2019) Euclid (2020) Space Solar Telescope

Proposals	ATHENA ATLAST EChO EXCEDE LOFT Fresnel Imager FINESSE Hypertelescope New Worlds Mission NGO NRO donation to NASA PLATO SPICA SOLAR-D THEIA WFIRST

Completed	Akari (Astro-F) (2006–2011) ALEXIS (1993–2005) ATM (1973–1974) ASCA (Astro-D) (1993–2000) Astro-1 (BBXRT HUT) (1990) Astro-2 (HUT) (1995) Astron (1983–1989) ANS (1974–1976) ATM (1973–1974) BeppoSAX (1996–2003) CHIPSat (2003–2008) Compton (CGRO) (1991–2000) Cos-B (1975–1982) COBE (1989–1993) EPOCh (2008) EPOXI (2010) EXOSAT (1983–1986) EUVE (1992–2001) FUSE (1999–2007) Kvant-1 (1987–2001) Kristall (1990–2001) Ginga (Astro-C) (1987–1991) Granat (1989–1998) Hakucho (1979–1985) HALCA (1997–2005) HEAO-1 (1977–1979) Herschel (2009–2013) Hinotori (Astro-A) (1981–1991) HEAO-2 (Einstein Obs.) (1978–1982) HEAO-3 (1979–1981) HETE-2 (2000–2007?) Hipparcos (1989–1993) IUE (1978–1996) IRAS (1983) ISO (1996–1998) IXAE (1996–2004) LEGRI (1997–2002) MSX (1996–1997) OAO-2 (1968–1973) OAO-3 (Copernicus) (1972–1981) Orion 1/2 (1971/1973) RELIKT-1 (1983–1984) ROSAT (1990–1999) Rossi X-ray (RXTE) (1995–2012) SAMPEX (1992–2004) SAS-B (1972–1973) SAS-C (1975–1979) Tenma (Astro-B) (1983–1985) Uhuru (1970–1973) WMAP (2001–2010) Yokoh (Solar-A) (1991–2001)

Lost	e.g. launch failures: OAO-1/OAO-B (1966/1970) ABRAXIS (1999) HETE (1996) WIRE (1999) ASTRO-E (2000)

Completed	hibernating after mission: SWAS (1998–2005) TRACE (1998–2010) WISE (2009–2011)

On hiatus	TAUVEX

Old plans	Astro-G Constellation-X Darwin Destiny Eddington FAME GEMS IXO JDEM LISA SIM & SIMlite SNAP TPF XEUS

See also	Great Observatories program List of space telescopes Sun spacecraft List of proposed space observatories

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