• The electromagnetic spectrum

  • Resolving the riddle of the infrared background

  • Finding the edge of a protostar disk

  • ALMA reveals how planets form around stellar twins

Welcome to the ALMA website for kids!
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Resolving the riddle of the infrared background

Have you ever seen the Milky Way? It’s a faint band of light in the sky. It’s only visible from a dark location, on a

Finding the edge of a protostar disk

A baby is already growing before it is born, inside the belly of its mother. The same is true for a star: even before it

ALMA reveals how planets form around stellar twins

Our Sun is a single star, but many other stars in our Milky Way galaxy belong to binary systems – two suns orbiting each other.

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Why is ALMA so high?

ALMA is the highest observatory in the world. The Chajnantor Plateau, where the 66 ALMA antennas are located, is at five kilometers above sea level.

Where is Chajnantor?

ALMA is the biggest astronomical observatory on Earth. It was built by countries in North America, Europe and East Asia. You might expect that ALMA

How are the antennas moved around?

The huge array of 66 ALMA antennas is located at the Chajnantor Plateau in the north of Chile, at 5,000 meters altitude. The site is