Astronomers have announced the discovery of A11pl3Z, a massive new interstellar object entering our solar system.

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

In the late 18th and 19th centuries, the Industrial Revolution created demand for stronger, more reliable materials for machines, railroads, ships and infrastructure. The material that emerged was ...

Young planets are often too small to be detected directly, and many protoplanetary disks are too distant to be observed in detail. Instead, astronomers look for indirect evidence, such as rings, gaps, ...

Astronomers have witnessed a planet causing eruptions on its parent star. The discovery, published in Nature, could reshape ...

Astronomers have confirmed the presence of a new interstellar object hurtling through our solar system, on a trajectory that ...

Astronomers using the European Space Agency's Cheops mission have caught an exoplanet that seems to be triggering flares of ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

What happens when a relic of the early Space Age unexpectedly outshines the cosmos, even for a fleeting instant? In June 2024 ...

Radio telescopes saw a strange burst of unknown energy in June 2024. Now we know it was from Relay 2, an early ...

L3Harris in Rochester played a pivotal role in building the Vera C. Rubin Observatory’s massive secondary mirror.

The 10-year survey is the primary mission of the Vera C. Rubin Observatory, located on a mountaintop at the edge of Chile’s ...