Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy
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.
It was proposed with three main instruments and an occulter:[1]
- eXoPlanet Characterizer (XPC)
- Star Formation Camera (SFC),
- Ultraviolet Spectrograph (UVS)
- A separate occulter spacecraft
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