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Posts Tagged ‘Express’

A Curious Cold Layer In The Atmosphere Of Venus

October 1, 2012 Leave a comment

Credits: ESA/MPS, Katlenburg-Lindau, Germany

Venus Express has spied a surprisingly cold region high in the planet’s atmosphere that may be frigid enough for carbon dioxide to freeze out as ice or snow.

The planet Venus is well known for its thick, carbon dioxide atmosphere and oven-hot surface, and as a result is often portrayed as Earth’s inhospitable evil twin.

But in a new analysis based on five years of observations using ESA’s Venus Express, scientists have uncovered a very chilly layer at temperatures of around –175ºC in the atmosphere 125 km above the planet’s surface.

The curious cold layer is far frostier than any part of Earth’s atmosphere, for example, despite Venus being much closer to the Sun.

Full Story: http://www.esa.int/esaSC/SEMILCERI7H_index_0.html

Rare Martian Lake Delta Spotted by Mars Express

September 2, 2011 Leave a comment

Credits: ESA/DLR/FU Berlin (G. Neukum)

Credits: ESA/DLR/FU Berlin (G. Neukum)

ESA’s Mars Express has spotted a rare case of a crater once filled by a lake, revealed by the presence of a delta. The delta is an ancient fan-shaped deposit of dark sediments, laid down in water. It is a reminder of Mars’ past, wetter climate.

The delta is in the Eberswalde crater, in the southern highlands of Mars. The 65 km-diameter crater is visible as a semi-circle on the right of the image and was formed more than 3.7 billion years ago when an asteroid hit the planet.

 

 

 

Full Story: http://www.esa.int/esaSC/SEMM71VTTRG_index_0.html