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Filling the GOCE data gap unearths South Pole’s geological past

Filling the GOCE data gap unearths South Pole’s geological past

It’s very difficult to know what lies beneath a blanket of kilometres-thick ice, so it is hardly surprising that scientists have long contested the shape and geology of the ancient supercontinent from which East Antarctica formed over a billion years ago. An ESA-funded study can now lay some of this conjecture to rest. Using sensors on aircraft to measure changes in the gravity and magnetic signatures of the different rocks under the ice, scientists have discovered a huge bay the size of the UK formed part of the edge of East Antarctica.

Agenzia spaziale Europea Space 13 Mar 2022
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Mars Express scopre un nuovo strato ionosferico

Mars Express scopre un nuovo strato ionosferico

MaRS is using the radio signals that convey data and instructions between the spacecraft and Earth to probe the planet's ionosphere, atmosphere, surface and even the interior. Information on the interior can be gleaned from the planet's gravity field, which will be calculated from changes in the velocity of the spacecraft relative to Earth. Surface roughness will be deduced from the way in which the radio waves are reflected from the Martian surface. Credits: ESA/C.Carreau

Agenzia spaziale Europea Europea Space 19 Dec 2005
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Star twins

Star twins

The first double-team of pulsars may reveal secrets of gravity.

Redazione Science 12 Jan 2004
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