Tanya Harrison head shot

Tanya Harrison

Mars Expert, Geologist, and Fellow of the Outer Space Institute

Latest Articles

Chasing the total solar eclipse at 38,000 feet

Where did you venture to view the Great American Eclipse? About 100 people were lucky enough to make the trip of a lifetime for it: 38,000 feet above the Pacific Ocean, courtesy of Alaska Airlines.

Gullies on Mars: Wet or Dry (Ice)?

Martian gullies were in the spotlight last week thanks to a NASA press release stating they were

LPSC 2016: Martian Geomorphology

Scientists showcased a wide range of features and processes on Mars' surface at last week's Lunar and Planetary Science Conference.

Latest Planetary Radio Appearances

More on Mars’ Watery History

Mars expert Tanya Harrison shares the details on some of the newest discoveries about Mars’ history, including potential megatsunamis and the discovery of opals in Gale Crater.