The most detailed map yet of the landscape beneath Antarctica's ice sheet has been assembled by a team of international ...

The British Antarctic Survey have released the most detailed map yet of the landscape beneath Antarctica's ice sheet ...

The most detailed map yet of the landscape beneath Antarctica's ice sheet has been assembled by a team including scientists ...

"In general, it's become clear the Antarctic Ice Sheet is thicker than we originally realised and has a larger volume of ice ...

A basic astrolabe begins with the mater ... This can be rotated on top of the plate to create a star map. The rete will also have an elliptical ring that tracks the annual path of the Sun as ...

And watching someone recreate the feat, such as by building an astrolabe by hand, can be very appealing too. The astrolabe is an ancient astronomical tool of incredible versatility, allowing the ...

Eventually, the astrolabe, this one intricate object which could do so many things, would be displaced by a whole range of separate instruments - the globe, the printed map, the sextant ...

The identification of an eleventh-century Islamic astrolabe bearing both Arabic and Hebrew inscriptions makes it one of the oldest examples ever discovered and one of only a handful known in the ...

Eventually, the astrolabe, this one intricate object which could do so many things, would be displaced by a whole range of separate instruments - the globe, the printed map, the sextant ...