Alien Life

A team from NASA’s Astrobiology Program has developed the “Ladder of Life Detection,” a guide for researchers where each rung represents a key attribute of life.

Two independent teams of astronomers have uncovered convincing evidence that three young planets are in orbit around an infant star known as HD 163296.

A faint and mysterious stream of microwaves emanating from star systems far out in the Milky Way could be caused by tiny diamonds, new research has suggested.

The climate throughout Mars' early history has long been debated - was the Red Planet warm and wet, or cold and icy? New research published in Icarus provides evidence for the latter.

Researchers are using seasonal changes in the Earth’s atmosphere to guide their search for life outside the solar system.

Habitable planets may be more likely around warmer M-dwarfs.

A well-known experiment with young people bouncing a ball showed that when an observer focuses on counting the passes, he does not detect if someone crosses the stage disguised as a gorilla.

Astrobiologists should consider searching for viruses in their quest to find evidence for life beyond Earth.

A new study uses artificial neural networks to classify planets into five types, estimating a probability of life in each case, which could be used in future interstellar exploration missions.

A 2-billion-year-old chunk of sea salt provides new evidence for the transformation of Earth's atmosphere into an oxygenated environment capable of supporting life as we know it.