Radio Telescopes

Radio interferometer · United States (New Mexico)

The Karl G. Jansky Very Large Array is an array of 27 radio antennas in New Mexico that work together as a single, steerable radio telescope.

Radio observatory · United States (Puerto Rico)

Arecibo Observatory in Puerto Rico operated a 305-metre radio dish — for decades the largest single-dish radio telescope — until its collapse in 2020.

Radio dish · 100 m

The Robert C. Byrd Green Bank Telescope in West Virginia is the world's largest fully steerable radio telescope, with a 100-metre dish.

Radio dish · 500 m

FAST, the Five-hundred-metre Aperture Spherical Telescope in China, is the world's largest single-dish radio telescope, used to study pulsars and fast radio bursts.

Radio interferometer

MeerKAT is a 64-dish radio array in South Africa and a precursor to the Square Kilometre Array.

Radio interferometer

LOFAR is a vast low-frequency radio array centred in the Netherlands, made of tens of thousands of simple antennas combined by software.

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.

Microwave / submillimeter dish · 10 m

The South Pole Telescope is a 10-metre telescope studying the cosmic microwave background and distant galaxy clusters from Antarctica.

Submillimeter · 2009

ESA's Planck mission (2009–2013) mapped the cosmic microwave background with unprecedented precision, refining the age and composition of the universe.