News tagged with orbit

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Harpooning space debris

(Phys.org) —Faced with the challenge of capturing tumbling satellites to clear key orbits, ESA is considering turning to an ancient terrestrial technology: the harpoon.

Jun 25, 2014
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Lava, not water, formed canyons on Mars

The canyon-like scars which line Mars' crust are seen by many as evidence for liquid water. But a study now suggests that a different kind of fluid – one much less hospitable to life – may actually have ...

Jun 03, 2014
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Against the current with lava flows

Primeval lava flows formed the massive canyons and gorge systems on Mars. Water, by contrast, was far too scarce on the red planet to have cut these gigantic valleys into the landscape. This is the conclusion ...

May 12, 2014
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