The Largest Telescope in the World: China’s FAST

What can the largest telescope in the world see
The largest telescope in the world is in China and it’s called FAST (Five-hundred-meter Aperture Spherical Telescope).


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China is home to the largest telescope. It’s known as FAST. This abbreviation stands for Five-hundred-meter Aperture Spherical Telescope. Let’s dive into the details.

For those in a hurry

  • FAST is a radio telescope in China that can observe radio waves from space.
  • FAST stands for Five-hundred-meter Aperture Spherical radio Telescope.
  • FAST has a dish that is 500 meters across, which is bigger than any other telescope in the world.
  • FAST can change the shape of its dish and move its feed cabin to point at different directions in the sky.
  • FAST can study neutral hydrogen gas, pulsars, extrasolar planets, and maybe even alien signals.

China’s Pride: The Largest Telescope on Earth

FAST’s diameter measures 500 meters. That’s equivalent to five football fields. It’s situated in Guizhou Province. The location minimizes interference from radio waves. It became operational in 2016.

How This Telescope Works

FAST consists of 4,450 triangular panels. These panels form a large parabolic dish. The dish focuses radio waves. It directs them to a receiver. Astronomers then analyze the captured data.

Discoveries Made by this Telescope

Since its launch, FAST has been busy. It’s discovered several pulsars. These are dense, rapidly rotating stars. It helps in studying the universe’s magnetic fields. The findings contribute to astrophysics research.

Challenges and Triumphs of Building the Largest Telescope

Building FAST was no easy task. The construction took five years. Nearly 9,000 residents were relocated. The cost was $180 million. The achievement solidified China’s place in global astronomy.

The Future of This Telescope

FAST is more than just a marvel. It’s a tool for scientific discovery. It will explore deep space phenomena. The search for extraterrestrial intelligence may benefit. Its capabilities continue to amaze.


The largest telescope in the world, FAST, is astounding. Its structure and capabilities intrigue scientists. It promises to unlock new frontiers in space exploration. The world watches eagerly.