I test a series of light experiments to explore reflection, refraction, and optical illusions, demonstrating how light ...

Black holes are among the most extreme objects in the universe, and now scientists can model them more accurately than ever ...

Priyanka Chopra is set to make a grand return to Indian cinema in SS Rajamouli's science fiction film 'Varanasi,' starring ...

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

Caltech is a place unlike any other, an Institute that is truly “small but mighty.” Its small size and the expertise of its ...

From an interstellar comet to breathtaking auroras and from brand-new rockets to iconic space telescopes, here are some of our favorite images from the cosmos in 2025 ...

A bevy of comets, a "blood moon" total lunar eclipse and impressive northern lights were just three of the skywatching highlights in 2025. Here's how they unfolded.