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

Your eyes are connected to your brain through thick bundles of nerve cells. These optic nerves transfer the signals from your two retinas to your

Look around you. You see the text you are reading right now. You see the room where you’re sitting in. Outside the window, you may

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

If your ears are good, you can hear very high tones. Children’s ears are usually better than the ears of grown-ups. So you might be

Since Hans Lipperhey built his first cheap telescope in his own workshop, telescopes became larger, and also more expensive. Sometimes, rich businessmen provided the money