Scientists have known for 70 years that there is much more mass in galaxies than can be seen. For example, spiral galaxies rotate at speeds that are only possible if the total mass of the galaxy is ...

Observations from the European satellite Gaia allow for the refutation of a controversial alternative theory and support the presence of an invisible component constituting the majority of the ...

A University of Colorado at Boulder faculty member is one of two scientists who will use data gathered by a world-class telescope flying aboard a modified Boeing 747 to peer at a distant star-forming ...

Here’s what you’ll learn when you read this story: For nearly a century, scientists have been searching for direct evidence of dark matter—one of the key missing pieces of our theoretical ...

Editor’s Note: This is part of a series called UChicago Class Visits, spotlighting transformative classroom experiences and unique learning opportunities offered at UChicago. At the top of a mountain ...