This year, two groups of astronomers plan to send messages containing information about humans and the location of Earth toward parts of space they think may be home to intelligent life.

Space is an important environment to preserve on behalf of professional astronomers, amateur stargazers, and Indigenous peoples, researchers argue.

In the past 10 years, international alliances on Earth have begun to expand into space. Nations with similar interests collaborate with one another while competing with other space blocs.

A novel photolithography technique could be a manufacturing game-changer for optical applications.

A newly discovered celestial object can be viewed as an ancestor of supermassive black holes. It was born relatively soon after the Big Bang.

Why the two sides of the moon are so different is one of its most enduring mysteries. Researchers now have an explanation.

Expanding the low-Earth orbit economy through increased commercial spaceflight will only push our planet further into its climate crisis.