Sarafina is an experienced on-camera host, script-writer and contributor, and speaker.



Here's Why Zodiac Constellations are Still Used in Astronomy

Constellations in the zodiac don’t determine our personalities or fate, but they do play an important role in astronomy.


The Milky Way: Dark Constellations, A Black Hole & Our Galaxy

The Milky Way is an iconic feature of the night sky. In this episode, we’ll help you spot the center of the galaxy and well-known nebulae in the Milky Way. And we’ll explain how galactic archaeologists like Dreia Carrillo figure out what the Milky Way is actually made of.


How Space-Time Works When You Look At The Stars

We're used to looking at everything around us unfolding in real time. But when we look at the stars, we’re actually looking at the past. We aren’t seeing the stars, or really anything in the universe, as they currently are. We’re seeing things as they were.


What The Color Of A Star Reveals About Its Composition

People have noticed this range of colors in the stars throughout history and it’s actually a pretty good indicator of a star’s temperature, chemical composition and life stage. In this episode, we explore why stars sometimes change color and how to spot an incredible binary system with differently colored stars right from your backyard.


A Guide to Navigating the Stars Without a Smartphone

What happens when you’re lost and you don’t have your phone or any recognizable landmarks to give you directions? Well, you look up at the stars.


The Rare Celestial Phenomena That Can Only Be Seen Before Nightfall

Most people think of astronomy as a nighttime activity, but if you hate staying up late, you’re in luck! As it turns out, there’s a whole lot of fascinating celestial objects and phenomena that can only be observed in the bright light of day.


From Sundials to Atomic Clocks: How the Universe Shapes Our Understanding of Time

Clocks: In a world of booked calendars and packed schedules, it’s hard to imagine life without them. But as it turns out, we’ve been telling time long before their invention. For millennia, people have used the stars to understand and organize the movement of time. 


Betelgeuse Is Destined to Explode as a Supernova…But When?

Long considered one of the brightest stars in the night sky, Betelgeuse has begun to dramatically fade then brighten again for reasons we can’t quite pin down. And it’s caused some people to wonder if it's about to explode.


26-year-old Bay Area woman opts for preventative double mastectomy

Allie Rasmus sits down with Sarafina Nance, a UC Berkeley student who decided to get a double mastectomy after testing positive for a gene linked to cancer, and Dr. Anne Peled who performed the Hidden Scar procedure.