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Thomas Appéré

Thomas Appéré

Thomas Appéré

Thomas Appéré is an associate scientist at L’IPAG, l’Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) in Grenoble, France, and a middle/high school physics and chemistry teacher at Jeanne d'Arc institution in Vitré, France. He holds a Ph.D. in Planetary Sciences and was formerly a post-doc at Laboratoire AIM (CEA-Saclay, France).

His research topic is the exploration of planetary surfaces with remote sensing. He studies the seasonal processes on Mars with OMEGA and CRISM hyperspectral images, focussing on the role of seasonal water ice deposits in the present martian water cycle. He also works on the massive inversion of VIMS observations of Titan.

Latest Processed Space Images

Zooming in on Egg Rock, a meteorite on Mars

December 12, 2016

While driving south beyond Murray Buttes on sol 1505 (October 30, 2016), Curiosity happened by a small meteorite, named Egg Rock. It's not the first likely meteorite a rover has seen on Mars, but it's the first to be zapped with ChemCam and have its composition confirmed as being that of an iron meteorite: dominantly iron, nickel, and phosphorus.

Before & after: Changing lighting conditions on Gale crater's rim

February 16, 2016

While working at Namib dune, Curiosity took advantage of relatively clear skies to shoot several images at the same spot on the rim of Gale crater, due north of the rover. These two photos were taken on sols 1234, with light from the and 1235 (January 25 and 26, 2016). At 7:00 a.m. local time, the light is from the east (right); at 12:31 p.m. local time, the light is high and to the west (left). It is also winter at the rover's position just south of the equator, so the near-noon light throws some shadow toward the rover.

A day on the wall of Gale crater, Mars

February 16, 2016

While working at Namib dune, Curiosity took advantage of relatively clear skies to shoot several images at the same spot on the rim of Gale crater, due north of the rover. Three of the photos were taken on sol 1246 (February 7, 2016), and two were taken on sols 1234 and 1235.

astronaut on Phobos
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