Tracy K. P. Gregg is an expert on planetary volcanology. She has a particular interest in volcanoes on Mars and Venus, and in volcanic activity elsewhere in the solar system.As a researcher, Gregg has studied topics that range from Martian volcanoes to lava lakes on the surface of Io, the intense...
Tracy K. P. Gregg is an expert on planetary volcanology. She has a particular interest in volcanoes on Mars and Venus, and in volcanic activity elsewhere in the solar system.As a researcher, Gregg has studied topics that range from Martian volcanoes to lava lakes on the surface of Io, the intensely volcanic moon that orbits Jupiter. She is interested in the interaction between lava and water, and traveled 2 miles below the surface of the Pacific Ocean in a submarine to study deep-sea lava flows on Earth. She also studies volcanism on the moon.Gregg has often worked with NASA satellite imagery to map and analyze volcanic formations on Mars and elsewhere.