* Astronomy

Blobrana · L

RE: Holes in ice

Blobrana · L

Over the winter an Iowa farmer reported that a UFO crashed through the ice in his pond. After taking inconclusive underwater photographs, the ice has finally melted and divers are searching first hand for what could be lurking in the depths.

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Blobrana · L

When a suspected meteorite landed on a Spruce Grove golf course recently, a number of area residents continue to come forward with their own stories.

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Blobrana · L

A couple of amateur sleuths determined to establish whether a meteorite caused an octopus-shaped hole in a frozen golf course pond last week went diving in the frigid waters Monday.
But the only proof they emerged with was evidence that a lot of people weren't hitting very well on the 16th hole.

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Blobrana · L

The mystery surrounding what Spruce Grove residents believe was a meteorite that hit an area pond last week began to unravel yesterday.
An eyewitness came forward to say he had seen a fireball shoot down from the sky.
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Blobrana · L

Mysterious hole in pond
Spruce Grove residents woke up yesterday to a mysterious octopus-shaped hole in a frozen golf-course pond.
A hole about 1.5 metres in diameter was visible yesterday on the pond at The Links at Spruce Grove, along with at least 20 splash marks - the longest about six metres.

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Blobrana · L

Some physicists gaze at the stars in the sky, but Victor Tsai of Harvard University and John Wettlaufer of Yale University in the US gaze at the stars on frozen lakes. Such star patterns often surround holes in ice, but the origin of their shape has always been a mystery. Now, by modelling their formation, the researchers have discovered that the shape is governed by the properties of the snow that covers the ice.
Wettlaufer was first inspired to investigate star patterns when he and his wife were looking out of an aeroplane window landing in Chicago and noticed a frozen lake peppered with the distinct shapes.

"We were absolutely struck. My wife is from Sweden and she knew these as the harbingers of dangerous ice skating, but had never seen so many" - John Wettlaufer.

The star patterns are formed when a hole in a recently-frozen lake allows water to swell up from beneath and spread over the snow-covered surface, leaving dark "fingers" of melted ice stemming from a central point. Previously, physicists had suspected that the fingers form because of a domino effect: the water starts flowing in one direction, causing the snow to melt faster in that region and thus helping the water to flow faster. But no-one has ever constructed a model to see if this idea is correct.

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Blobrana · L

In January 2001, Susan Taylor, a research scientist at the Army Corps of Engineer’s Cold Regions Research Laboratory in Hanover, visited Frost Pond in Dublin to investigate a mysterious hole in the ice.
Local residents asked her to come because her work on snowpack research includes going to the South Pole to collect micro-meteorites – and they wondered whether the 3-foot-wide gap had been caused by incoming space debris.

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