Topic
Radio astronomy
4 questions tagged Radio astronomy — spanning every one of the seven Ws.
where
Where is the Square Kilometre Array being built?
The SKA is being built across sites in South Africa and Australia.
AstronomyRadio astronomy
where
Where is the world's largest radio telescope?
The Five-hundred-meter Aperture Spherical Telescope is in Guizhou, China. Its dish spans 500 meters across and is used to study pulsars and faint radio signals.
PhysicsRadio astronomy
how
How do astronomers map invisible hydrogen in space?
They use the 21-centimeter radio emission from neutral hydrogen atoms. Radio telescopes can trace hydrogen across galaxies and intergalactic space.
SpaceRadio Astronomy
how
How does a radio telescope listen to space?
It collects radio waves from space with a large dish or antenna and converts them into signals that can be studied. Radio telescopes can detect objects and phenomena invisible to optical telescopes.
AstronomyRadio astronomy