Matteo Luisi, director of the planetarium and observatory at Westminster College, will present the 2025 Henderson Lecture.

NASA’s James Webb Space Telescope has unveiled a breathtaking cosmic landscape that looks more like a scene from fantasy than ...

Once they measured the star’s extinction, the team then rendered those dusty regions into a 3D map which they could chart for ionized hydrogen gas. Areas with higher levels of ionized hydrogen are ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago. In ...

A vast river of neutral hydrogen bridges two galaxies that are beginning to enter the monstrous Virgo Cluster, and this structure is helping astronomers better understand our Milky Way's relationship ...

Before joining Discover Magazine, Paul Smaglik spent over 20 years as a science journalist, specializing in U.S. life science policy and global scientific career issues. He began his career in ...