Light is energy that can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. (Illustration: NASA/CXC/M.Weiss)

Light is energy that can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. (Illustration: NASA/CXC/M.Weiss)

Closeup front view of one antenna of the Allan Telescope Array, a radio telescope for combined radio astronomy and SETI (Search for Extrater...

In Search of Planetary Intelligence, Which Is Not Yet on Earth

Closeup front view of one antenna of the Allan Telescope Array, a radio telescope for combined radio astronomy and SETI (Search for Extrater...

Amateur Radio Astronomy Interferometer by Jim Abshier at University Lowbrow Astronomers

Amateur Radio Astronomy Interferometer by Jim Abshier at University Lowbrow Astronomers

Scientists have long known that the nearby galaxy Andromeda and our own Milky Way galaxy will collide in four to five billion years, but now a new computer simulation (above) from the International Centre for Radio Astronomy Research in Western Austr...

WATCH: Milky Way Gets 'Cannibalized' By Nearby Galaxy

Scientists have long known that the nearby galaxy Andromeda and our own Milky Way galaxy will collide in four to five billion years, but now a new computer simulation (above) from the International Centre for Radio Astronomy Research in Western Austr...

Tools of Radio Astronomy

Tools of Radio Astronomy (Paperback)

Tools of Radio Astronomy

Interferometry and Synthesis in Radio Astronomy

Interferometry and Synthesis in Radio Astronomy (Hardcover)

Interferometry and Synthesis in Radio Astronomy

The Rise of Radio Astronomy in the Netherlands: The People and the Politics

The Rise of Radio Astronomy in the Netherlands: The People and the Politics (Hardcover)

The Rise of Radio Astronomy in the Netherlands: The People and the Politics

Searching The Sky 2. Turkey vultures soar above the Robert C. Byrd Green Bank Telescope, the world's largest fully steerable radio telescope. It is part of the National Radio Astronomy Observatory (NRAO) site at Green Bank, West Virginia, USA. The telescope sits near the heart of the United States National Radio Quiet Zone, a large area where all radio transmissions are limited to avoid emissions toward the GBT and the Sugar Grove Research Facility, West Virginia.

Searching The Sky 2. Turkey vultures soar above the Robert C. Byrd Green Bank Telescope, the world's largest fully steerable radio telescope. It is part of the National Radio Astronomy Observatory (NRAO) site at Green Bank, West Virginia, USA. The telescope sits near the heart of the United States National Radio Quiet Zone, a large area where all radio transmissions are limited to avoid emissions toward the GBT and the Sugar Grove Research Facility, West Virginia.

Image credit: David Champion, Max Planck Institute for Radio Astronomy.

Why Does Gravity Move At The Speed Of Light?

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