23:37 The National Dialogue Quartet, a pro-democracy group in Tunisia has won the Nobel Peace Prize for role in launching the Arab Spring Movement

23:24 Waikato's lifted the Ranfurly Shield from Hawke's Bay with a 36 - 30 victory in Napier tonight.

19:00 Thai islands are being blanketed by haze from Indonesian forest fires and several flights have been turned back due to poor visibility.

18:59 An 0800 number has been set up for information in the ongoing homicide investigation in Waitarere. The number is 0800 234 7437.

18:59 Police in Hamilton say the discovery of a body behind several properties in Lake Crescent is unexplained, and an investigation is underway.

Fri, 13 Apr 2012

VIDEO: Why don't those stars move?

Stars in the sky will typically appear to rise and set as the Earth turns. If you look closely at the above time-lapse movie, however, there are points of light that appear stationary. These objects are not stars but human-launched robotic spacecraft that remain fixed high above the Earth's equator. Called geostationary satellites, they don't fall down because they do orbit the Earth -- they just orbit at exactly the same speed that the Earth rotates. The orbital distance where this is possible is much farther than the International Space Station but much closer than the Moon. The video was taken from one of the highest revolving restaurants in the world located on the Mittelallalin in the Swiss Alps. An even closer inspection will show that the geostationary satellites flash with glints of reflected sunlight. The satellites also all appear on a single line - actually the projection of the Earth's equator onto the sky.

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