Grad Students Boost Astrobiology Hypothesis Browser

Astrobiology News

For their semester-long science communication capstone project, fifteen Georgia Tech graduate students enrolled in the Astrobiology Graduate Certificate Program published content for Hypothesis Browser, an online tool for hypothesis-based literature searches, designed to capture the state of knowledge around the science of astrobiology and life detection.

Hypotheses were diverse in scope, ranging from planetary formation, to origins of life, to exoplanets, to icy moons, to the evolution of Earth and life. A full list of hypotheses and webpage links is below.

This project was a collaboration between Georgia Tech Astrobiology Graduate Certificate Program, Graham Lau at Blue Marble Space Institute of Science, and Andrew Pohorille at NASA Ames.

Planetary Formation

Katie Koube: Moon formation 

Reilly Brennan: Solar System Formation 


Origins of Life

Tyler Roche: Information Polymers

Rebecca Guth-Metzler: Nucleobases

Taylor Plattner: Organics at Hydrothermal Vents



Alex Sessa: Technosignatures

Pengxiao Xu: Gaseous biosignatures on exoplanets 


Worlds of the Solar System

Justin Lawrence: Icy Moons 

Elizabeth Spiers: Europa ice thickness

Chase Chivers: Icy moons

Abhijit Harathi: Mars methane


Evolution of Earth and Life

Maria Catalina Granada: Panspermia 

Zijian Li: Manganese and Oxygen Leah O’Rourke: Cretaceous–Tertiary mass extinction

Charles Lindsey: Early/late mitochondria

Loren Williams speaks at ATL Science Tavern

Public Events

GT Biochemistry Professor Loren Williams will be presenting “Voyage from the Gates of the Hadean – Origins of Life Research at Georgia Tech” at the Atlanta Science Tavern on Saturday February 22, 2020 at 7pm at Manuel’s Tavern. Details and RSVP here and below.


– This event is a production of the Atlanta Science Tavern.
– It is free and open to the public.
– Seating is on a first-come basis.
– RSVPs are not required to attend nor do they reserve seats.
– Doors open at 6:00 pm for early arrival.
– Gather for dinner by 7:00.
– The evening’s presentation gets under way around 7:45.
– Parking at Manuel’s has changed; refer to the note below for details.

Loren Williams, Professor
School of Chemistry and Biochemistry
Georgia Institute of Technology

The origin of life (OOL) took place around 4 billion years ago, soon after the Earth cooled in the Hadean Eon. Water-based chemistry converted small building blocks to large polymeric molecules. Polymers have incredible properties, including ability to form assemblies. Polymers can assemble into compartments, fibers, enzymes and motors and can store and transduce information.

We have models, that are testable by experiment, to explain how increasing complexity of polymers led to simple microbial cells. For nearly 3 billion years microbes ruled the planet. Complex plants and animals are relatively recent branches on the tree of life.

The OOL can be studied from the bottom up (using chemical principles) or from the top down (mining information from biological systems). In this presentation I will discuss progress from long-running efforts at Georgia Tech that use both top-down and bottom-up approaches to unravel the OOL.

Consideration of OOL forces us to frame and confront the most profound and vexing questions in science and philosophy. The OOL tests our understanding of geological, chemical and biological principles and unsettles our sense of place in the universe.

Congratulations to Dr. Denise Okafor, Georgia Tech Astrobiology Alumna!

Astrobiology News

June 2019

Dr. Denise Okafor, currently a postdoctoral fellow at Emory University, will be starting as an assistant professor in the Penn State Department of Biochemistry and Molecular Biology in January 2020. Dr Okafor graduated from Georgia Tech with a PhD in Biochemistry in 2015. She worked on research related to the origin of life in the Williams and Hud labs. Dr Okafor was featured as one of six GT College of Sciences alumni during the 2019 Georgia Tech Homecoming. Read more about Dr. Okafor’s research accomplishments here. 

Six NASA Astrobiology Postdoctoral Fellows featured by Georgia Tech College of Sciences!

Astrobiology News

March 2019

The College of Sciences is the proud host of six NPP fellows advancing NASA’s mission in astrobiology and solar system exploration. The concentration of talent testifies to Georgia Tech’s vibrant astrobiology and space science research communities. Meet the six NPP fellows whose scientific career paths are being shaped by their mentors in the College of Sciences.