A young star in the constellation Sagittarius (the Archer) is orbited by two infant planets. The planets were found by ALMA. They’re about twice as large as the planet Saturn in our own solar system. Planets orbiting other stars have been found before. But in this case, the planets are still forming. They’re baby planets. The two baby planets have

Suppose you live in a very big house, with lots of families, each one with many children. Every month or so, a new baby is born, so you know all about it. You wonder about childbirth in other houses. But the nearest big house is many miles away, and the houses in your neighborhood are all small, with just one

When our Milky Way galaxy was still young, billions of years ago, it was smaller and more chaotic than it is now. It also contained huge amounts of cold molecular gas – the stuff that stars are born from. At least, that’s the conclusion that astronomers draw from new ALMA observations. Of course, ALMA cannot see what the Milky Way

Surprise: ALMA finds lots of gas around heftier stars

Morning fog disappears when the sun rises. Can you imagine what happens when the sun would be much hotter and brighter? The fog will disappear much sooner, of course. Astronomers believed that the same would be true for newborn stars. They are often surrounded by disks of dust and gas. So you would expect that the gas – a form

If you want to cook up a nice meal, you need the right ingredients. Without beans, you can’t make a good chili. And to bake an apple pie, you need apples, of course. In the Universe, it’s the same. The available ingredients determine what can be ‘cooked up’. One of the most special things that have formed in the Universe