This was quite the expanding exchange with astrophysicist Sarafina Nance (find her on Twitter!) from Berkley College on a wide ranging topics from the deep depths of the cosmos to the current state of humanity here on Earth. We also touch on climate change, supernovas, COVID-19, and so much more. Sarafina is a beautiful and brilliant soul with some excellent ideas and perspectives.

Sarafina Nance [2 BSc (Hons), MSc, Ph.D (candidate)] is an NSF graduate research fellow and astrophysics Ph.D candidate specializing in supernovae and cosmology. She spent time researching at the Center for Astrophysics at Harvard through an NSF-funded summer program, holds dual bachelor degrees in physics and in astronomy as a Dean’s Honored Graduate from The University of Texas at Austin, completed a masters in astronomy at UC Berkeley, and is currently there working towards her Ph.D. She is also a passionate women’s health advocate and science communicator.

Sarafina has devoted her career to researching supernovae. She's interested in studying supernovae from both an observational and theoretical perspective. Her research is divided most cleanly between modeling supernova astrophysics and using supernovae to study the composition and fate of the Universe. In the former, she works to constrain the mass and evolutionary state of the massive red supergiant Betelgeuse to determine when it will explode as a supernova. In the latter, she works at the Center for Computational Cosmology at the Lawrence Berkeley National Lab (LBNL) to run massive computer simulations on a supercomputer to study the explosion physics of stars in the final throes of their lives. Her goal is to measure the rate of the expansion of the Universe propelled by dark energy. Recently, she's worked on determining when Betelgeuse will explode, exploring asteroseismology in red giants, and using core-collapse supernovae for cosmology to measure the Hubble constant. Her work has been recognized in the field in academic journals and in talks given around the country, and has been featured in popular science publications like Space.com, BBC, Sky & Telescope, NPR Short Wave, and National Geographic.

In addition to astronomy, Sarafina is an outspoken figure in women’s health advocacy efforts. She was diagnosed with the cancer-causing BRCA gene mutation in her early 20’s, and chose to have a preventative double mastectomy at age 26 to lower her extremely high risk of breast cancer (87%). She is vocal about her journey, as well as the importance of genetic testing, self-checks, and preventative medicine.

She’s spoken publicly about her journey to the media, and has been featured in publications like The SF Chronicle, Refinery29, POPSUGAR, BBC 100 Women, BBC Women's Hour, and the Bay Area Fox News affiliate.

Sarafina has launched a comprehensive effort to communicate science—both space and breast cancer— to the public in efforts to increase the baseline level of scientific literacy. She is the host of the astronomy show Constellations by Seeker, a series dedicated to exploring the most mind-blowing aspects of the universe and uncovering our cultural ties to the cosmos. She worked at the McDonald Observatory teaching public programs and leading public viewing nights for groups up to 500 people.

Enamored with science communication, she expanded to the digital world, where her Twitter threads on space, equity in stem, BRCA, and the life of a scientist have earned her over 110,000 Twitter followers, 17,000 Instagram followers, and over 2,000 YouTube followers. She uses these opportunities to mentor young women and underrepresented minorities th...