11:56 A Perth-based mining company isn't revealing whether it paid a ransom to secure the release of a New Zealand man kidnapped in Nigeria.

11:36 British labour Party leader Jerermy Corbyn's closest political allies are deserting him in the wake of the Brexit vote.

11:35 The killers of three-year old Moko Rangitoheriri will sentenced for manslaughter this morning.

11:34 One of the two ombudsmen has resigned two years into his five-year term.

08:41 Six people have been stabbed during a white supremacy protest and counter protest in California. Five of the six were taken to hospital.

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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