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A knowledge platform for everything above Earth — astronomy, space, the night sky, celestial events, mythology, and astrology as a clearly separate cultural tradition.

Astronomy is presented as scientific, evidence-based, and sourced. Astrology is presented as cultural, symbolic, and interpretive — never as proven science.

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Home
Observatories
Future Telescopes

Discover

Future Telescopes

Observatories under construction — not yet operational.

4 entries.

Extremely Large Telescope
Planned
Optical / infrared reflector · 39.3 m
ESO's Extremely Large Telescope, under construction in Chile, will be the world's largest optical/infrared telescope with a 39-metre segmented mirror. It is not yet operational.
Thirty Meter Telescope
Planned
Optical / infrared reflector · 30 m
The Thirty Meter Telescope is a planned 30-metre optical/infrared telescope; its site remains the subject of ongoing decisions. It is not yet operational.
Square Kilometre Array
Planned
Radio interferometer
The Square Kilometre Array is a planned intercontinental radio observatory in South Africa and Australia that will be the world's largest radio telescope. It is not yet operational.
Nancy Grace Roman Space Telescope
Planned
Near Infrared
The Nancy Grace Roman Space Telescope is a planned NASA wide-field infrared observatory for dark-energy and exoplanet surveys. It is not yet operational.