Tweel (A Martian Odyssey) Tweel (A Martian Odyssey) Tweel (also referred to as a "Tweerl", the exact pronunciation of the word is said to be impossible for humans) is a fictional extraterrestrial from the planet Mars, featured in two short stories by Stanley G. Weinbaum. The alien was featured in "A Martian Odyssey", first published in 1934, and "Valley of Dreams" four months later. Weinbaum died of lung cancer soon after, and a third installment in the series never saw fruition. Tweel remains one of the most recognised aliens in early science fiction, and is said to be an inspiration for aliens in the
Mars Space Flight Facility Mars Space Flight Facility The Mars Space Flight Facility is located at Arizona State University in Tempe, Arizona. The facility is a research center in Arizona State University's School for Earth and Space Exploration. Scientists, researchers, and students there specialize in using instruments on spacecraft at Mars for remote sensing research primarily concerning the geology and mineralogy of the planet. The instruments based at the facility include the Thermal Emission Imaging System (THEMIS) on NASA's Mars Odyssey orbiter and two Miniature Thermal Emission Spectrometers (Mini-TES) on the Mars Exploration Rovers, Spirit and Opportunity. (A full-size Mars rover model, bedded on