Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called ...

Extraterrestrial life could betray itself not in the molecules themselves, but in their arrangement. A recent study shows that living systems leave distinctive statistical patterns in their organic ...

Scientists have detected erythrulose, a sugar found on Earth, in the interstellar medium, marking the first direct discovery of sugar in space. This finding, published in Nature Astronomy, suggests ...