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07 May 13 in Apprendre
La formation de Mars.

La formation de Mars.

D'après les scientifiques, les collisions de roches dans l'espace ayant donné naissance à Mars semblent être étonnamment différentes de celles ayant f...

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Curiosity: Conditions Once Suited for Life on Mars

An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.

Scientists identified sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon -- some of the key chemical ingredients for life -- in the powder Curiosity drilled out of a sedimentary rock near an ancient stream bed in Gale Crater... Read More

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book review NightWatch: A Practical Guide to Viewing the Universe

The first three editions of NightWatch sold more than 600,000 copies, making it the top-selling stargazing guide in the world for the last 20 years. The key feature of this classic title is the section of star charts that are cherished by backyard astronomers... Read More