If you bake a cake, you need all kinds of ingredients, like flour, butter, sugar and eggs. You can’t make something from nothing! Likewise, when
When two cars crash into each other, you end up with a lot of wreckage. The same is true for two colliding galaxies. Over time,
We all know about environmental pollution. The air is polluted by cars, airplanes and factories. The oceans are polluted with plastic. Humans produce a lot
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
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 highest observatory in the world. The Chajnantor Plateau, where the 66 ALMA antennas are located, is at five kilometers above sea level.