Science and Exploration

SoNotHer · 01-18-2012, 07:47 PM

Absolutely gorgeous...

Quote:

Originally Posted by Corkey

http://news.yahoo.com/video/science-...-27916671.html

This is just cool, so enjoy!

SoNotHer · 01-21-2012, 09:37 AM

Latest ScienceCast from NASA exploring the snow drought (despite evidence to the contrary this weekend) and describing the effects of La Nina and the Arctic Oscillation:

Softhearted · 01-23-2012, 07:46 AM

"Fossils of ancient sea creature discovered
Toronto researchers make 500-million-year-old find in Tulip Beds in Canadian Rockies"

source: http://www.cbc.ca/news/technology/st...-creature.html

Softhearted · 01-23-2012, 07:52 AM

"Dirty dancing: dung beetles get down to walk the line
The meticulous insects pirouette atop their dung balls to get their bearings and correct navigational errors."

source:http://www.nature.com/news/dirty-dan...he-line-1.9868

Softhearted · 01-23-2012, 01:13 PM

"Aye-aye lemur 'heats up' its special foraging finger
By Ella Davies
Reporter, BBC Nature"

source: http://www.bbc.co.uk/nature/16577537

SoNotHer · 01-23-2012, 08:46 PM

How The Biggest Solar Storm Since 2005 Is Going to Affect You

By Jesus Diaz
Jan 23, 2012 8:42 PM

There's a solar Coronal Mass Ejection travelling towards us at 1,400 miles per second, the largest solar storm since 2005. It will hit Earth around 9am Eastern Time, causing fluctuations on the power grid and disruptions to the Global Positioning System.

Don't worry, you won't die.

But there's something else, a strong proton storm—ranking S3 on a 5-level scale—which is in full rage now and gradually increasing. While CMEs are normal—about 2,000 every 11-year solar cycle—proton storms are very rare. Only a couple of dozen happen per solar cycle. And this one can be dangerous.

The storm has already affected aircraft traffic and may affect satellites' computers. On a telephone interview, NOAA's Space Weather Prediction Center physicist Doug Biesecker told me that, fortunately, there are measures to avoid most dangers.

"Many airliners have been avoiding the North Pole routes because they are more exposed to the proton storm, which disrupts High Frequency radio communications," he said on a telephone interview. HF datalinks are crucial to modern airflight, as they keep aircraft connected to Air Traffic Control. Due to the structure of the magnetic field that surrounds Earth, the polar cusps have very little protection against outbursts of solar radiation, so any airplane crossing that area could be exposed to this mayhem.
We're experiencing technical difficulties

He also said that satellites may be affected, causing reboots on onboard computers as well as noise in imaging systems and interferences in telemetry caused by something called single event offsets. These events may change the values of the telemetry data. Since we are aware of these interferences in advance, engineers on ground bases can take them into account and make corrections before firing any commands that may jeopardize the life of the spacecraft.

The only real unpredictable danger is a total hardware failure, with a proton hitting an electronic component and killing it. But according to Biesecker, this "is a very remote possibility."

Global positioning systems are also affected—and will be even more affected tomorrow. Regular humans will not notice this. You will be able to keep using your GPS normally, but people using high precision GPS equipments—like oil drilling, military, engineering and mining operations—will definitely notice the problems.

According to Karen Fox at NASA Goddard Space Center, "NASA alerted operators of their satellites that the CME was coming, so those operators can take whatever shielding precautions they can."

The biological danger

NOAA's scale says that an S3 proton storm may pose danger to passengers in high-flying aircraft at high latitudes, which is why some airplanes below the 65th parallel north are now actually flying at lower altitudes to avoid any kind of radiation nastiness.

They also recommend for astronauts to stay home and avoid space walks but—according to Biesecker—this type of storm is "far below the level needed for the ISS to take any extraordinary protection measures." If it's ok for them, you can be sure it's perfectly fine for you and me down here on good old planet Earth.
What will happen when the CME hits tomorrow morning?

When the Coronal Mass Ejection arrives to Earth at 1,400 miles per second, we will have a geomagnetic storm and a radio blackout. This, apart from the possibility of awesome auroras at latitudes as low as New York, means several things.

How The Biggest Solar Storm Since 2005 Is Going to Affect YouFirst, the radio blackout will be level R2, which is moderate. According to the NOAA scale, it will cause "limited blackout of HF radio communication on the sunlit side and loss of radio contact for tens of minutes," as well as "degradation of low-frequency navigation signals for tens of minutes." Nothing that you should worry about.

The geomagnetic storm will only be "strong G2 with possibilities of G3," according to Bisecker. In the best case scenario, only power lines will be affected. You will not notice it because any power fluctuations will be handled by companies at the grid level. If the storm is long enough, however, it may damage power grid transformers.

Other than all this, and unless something extraordinary happens, you shouldn't worry about the world ending tomorrow. It won't. But keep your eyes open for auroras happening near you. Those living up north in particular will have a great show today and tomorrow.

SoNotHer · 01-29-2012, 01:38 AM

Snowy owls soar south from Arctic in rare mass migration
By Laura Zuckerman | Reuters – 5 hrs ago

A snowy white owl takes flight in this undated handout photo courtesy of U.S. Fish and Wildlife Service

SALMON, Idaho (Reuters) - Bird enthusiasts are reporting rising numbers of snowy owls from the Arctic winging into the lower 48 states this winter in a mass southern migration that a leading owl researcher called "unbelievable."

Thousands of the snow-white birds, which stand 2 feet tall with 5-foot wingspans, have been spotted from coast to coast, feeding in farmlands in Idaho, roosting on rooftops in Montana, gliding over golf courses in Missouri and soaring over shorelines in Massachusetts. A certain number of the iconic owls fly south from their Arctic breeding grounds each winter but rarely do so many venture so far away even amid large-scale, periodic southern migrations known as irruptions.

"What we're seeing now -- it's unbelievable," said Denver Holt, head of the Owl Research Institute in Montana. "This is the most significant wildlife event in decades," added Holt, who has studied snowy owls in their Arctic tundra ecosystem for two decades.

Holt and other owl experts say the phenomenon is likely linked to lemmings, a rodent that accounts for 90 percent of the diet of snowy owls during breeding months that stretch from May into September. The largely nocturnal birds also prey on a host of other animals, from voles to geese.

An especially plentiful supply of lemmings last season likely led to a population boom among owls that resulted in each breeding pair hatching as many as seven offspring. That compares to a typical clutch size of no more than two, Holt said. Greater competition this year for food in the Far North by the booming bird population may have then driven mostly younger, male owls much farther south than normal.

Research on the animals is scarce because of the remoteness and extreme conditions of the terrain the owls occupy, including northern Russia and Scandinavia, he said. The surge in snowy owl sightings has brought birders flocking from Texas, Arizona and Utah to the Northern Rockies and Pacific Northwest, pouring tourist dollars into local economies and crowding parks and wildlife areas. The irruption has triggered widespread public fascination that appears to span ages and interests.

"For the last couple months, every other visitor asks if we've seen a snowy owl today," said Frances Tanaka, a volunteer for the Nisqually National Wildlife Refuge northeast of Olympia, Washington. But accounts of emaciated owls at some sites -- including a food-starved bird that dropped dead in a farmer's field in Wisconsin -- suggest the migration has a darker side. And Holt said an owl that landed at an airport in Hawaii in November was shot and killed to avoid collisions with planes.

He said snowy owl populations are believed to be in an overall decline, possibly because a changing climate has lessened the abundance of vegetation like grasses that lemmings rely on. This winter's snowy owl outbreak, with multiple sightings as far south as Oklahoma, remains largely a mystery of nature.

"There's a lot of speculation. As far as hard evidence, we really don't know," Holt said.

01-23-2012, 01:13 PM	#5
Softhearted Member How Do You Identify?: --- Preferred Pronoun?: ---- Relationship Status: --- Join Date: Nov 2009 Location: --- Posts: 298 My Photo Gallery Thanks: 454 Thanked 285 Times in 109 Posts Rep Power: 1556234	Aye-aye is an odd little creature :) "*Aye-aye lemur 'heats up' its special foraging finger* By Ella Davies Reporter, BBC Nature" source: http://www.bbc.co.uk/nature/16577537

01-21-2012, 09:37 AM	#2
SoNotHer Senior Member How Do You Identify?: Professional Sandbagger and Jenga Zumba Instructor Join Date: Sep 2011 Location: In the master control room of my world domination dreams Posts: 2,811 My Photo Gallery Thanks: 6,587 Thanked 4,736 Times in 1,409 Posts Rep Power: 21474851	Latest ScienceCast from NASA exploring the snow drought (despite evidence to the contrary this weekend) and describing the effects of La Nina and the Arctic Oscillation:

01-23-2012, 07:46 AM	#3
Softhearted Member How Do You Identify?: --- Preferred Pronoun?: ---- Relationship Status: --- Join Date: Nov 2009 Location: --- Posts: 298 My Photo Gallery Thanks: 454 Thanked 285 Times in 109 Posts Rep Power: 1556234	*"Fossils of ancient sea creature discovered* Toronto researchers make 500-million-year-old find in Tulip Beds in Canadian Rockies" source: http://www.cbc.ca/news/technology/st...-creature.html

01-23-2012, 07:52 AM	#4
Softhearted Member How Do You Identify?: --- Preferred Pronoun?: ---- Relationship Status: --- Join Date: Nov 2009 Location: --- Posts: 298 My Photo Gallery Thanks: 454 Thanked 285 Times in 109 Posts Rep Power: 1556234	"Dirty dancing: dung beetles get down to walk the line The meticulous insects pirouette atop their dung balls to get their bearings and correct navigational errors." source:http://www.nature.com/news/dirty-dan...he-line-1.9868

01-23-2012, 08:46 PM	#6
SoNotHer Senior Member How Do You Identify?: Professional Sandbagger and Jenga Zumba Instructor Join Date: Sep 2011 Location: In the master control room of my world domination dreams Posts: 2,811 My Photo Gallery Thanks: 6,587 Thanked 4,736 Times in 1,409 Posts Rep Power: 21474851	How The Biggest Solar Storm Since 2005 Is Going to Affect You By Jesus Diaz Jan 23, 2012 8:42 PM There's a solar Coronal Mass Ejection travelling towards us at 1,400 miles per second, the largest solar storm since 2005. It will hit Earth around 9am Eastern Time, causing fluctuations on the power grid and disruptions to the Global Positioning System. Don't worry, you won't die. But there's something else, a strong proton storm—ranking S3 on a 5-level scale—which is in full rage now and gradually increasing. While CMEs are normal—about 2,000 every 11-year solar cycle—proton storms are very rare. Only a couple of dozen happen per solar cycle. And this one can be dangerous. The storm has already affected aircraft traffic and may affect satellites' computers. On a telephone interview, NOAA's Space Weather Prediction Center physicist Doug Biesecker told me that, fortunately, there are measures to avoid most dangers. "Many airliners have been avoiding the North Pole routes because they are more exposed to the proton storm, which disrupts High Frequency radio communications," he said on a telephone interview. HF datalinks are crucial to modern airflight, as they keep aircraft connected to Air Traffic Control. Due to the structure of the magnetic field that surrounds Earth, the polar cusps have very little protection against outbursts of solar radiation, so any airplane crossing that area could be exposed to this mayhem. We're experiencing technical difficulties He also said that satellites may be affected, causing reboots on onboard computers as well as noise in imaging systems and interferences in telemetry caused by something called single event offsets. These events may change the values of the telemetry data. Since we are aware of these interferences in advance, engineers on ground bases can take them into account and make corrections before firing any commands that may jeopardize the life of the spacecraft. The only real unpredictable danger is a total hardware failure, with a proton hitting an electronic component and killing it. But according to Biesecker, this "is a very remote possibility." Global positioning systems are also affected—and will be even more affected tomorrow. Regular humans will not notice this. You will be able to keep using your GPS normally, but people using high precision GPS equipments—like oil drilling, military, engineering and mining operations—will definitely notice the problems. According to Karen Fox at NASA Goddard Space Center, "NASA alerted operators of their satellites that the CME was coming, so those operators can take whatever shielding precautions they can." The biological danger NOAA's scale says that an S3 proton storm may pose danger to passengers in high-flying aircraft at high latitudes, which is why some airplanes below the 65th parallel north are now actually flying at lower altitudes to avoid any kind of radiation nastiness. They also recommend for astronauts to stay home and avoid space walks but—according to Biesecker—this type of storm is "far below the level needed for the ISS to take any extraordinary protection measures." If it's ok for them, you can be sure it's perfectly fine for you and me down here on good old planet Earth. What will happen when the CME hits tomorrow morning? When the Coronal Mass Ejection arrives to Earth at 1,400 miles per second, we will have a geomagnetic storm and a radio blackout. This, apart from the possibility of awesome auroras at latitudes as low as New York, means several things. How The Biggest Solar Storm Since 2005 Is Going to Affect YouFirst, the radio blackout will be level R2, which is moderate. According to the NOAA scale, it will cause "limited blackout of HF radio communication on the sunlit side and loss of radio contact for tens of minutes," as well as "degradation of low-frequency navigation signals for tens of minutes." Nothing that you should worry about. The geomagnetic storm will only be "strong G2 with possibilities of G3," according to Bisecker. In the best case scenario, only power lines will be affected. You will not notice it because any power fluctuations will be handled by companies at the grid level. If the storm is long enough, however, it may damage power grid transformers. Other than all this, and unless something extraordinary happens, you shouldn't worry about the world ending tomorrow. It won't. But keep your eyes open for auroras happening near you. Those living up north in particular will have a great show today and tomorrow.

01-29-2012, 01:38 AM	#7
SoNotHer Senior Member How Do You Identify?: Professional Sandbagger and Jenga Zumba Instructor Join Date: Sep 2011 Location: In the master control room of my world domination dreams Posts: 2,811 My Photo Gallery Thanks: 6,587 Thanked 4,736 Times in 1,409 Posts Rep Power: 21474851	Snowy owls soar south from Arctic in rare mass migration By Laura Zuckerman \| Reuters – 5 hrs ago A snowy white owl takes flight in this undated handout photo courtesy of U.S. Fish and Wildlife Service SALMON, Idaho (Reuters) - Bird enthusiasts are reporting rising numbers of snowy owls from the Arctic winging into the lower 48 states this winter in a mass southern migration that a leading owl researcher called "unbelievable." Thousands of the snow-white birds, which stand 2 feet tall with 5-foot wingspans, have been spotted from coast to coast, feeding in farmlands in Idaho, roosting on rooftops in Montana, gliding over golf courses in Missouri and soaring over shorelines in Massachusetts. A certain number of the iconic owls fly south from their Arctic breeding grounds each winter but rarely do so many venture so far away even amid large-scale, periodic southern migrations known as irruptions. "What we're seeing now -- it's unbelievable," said Denver Holt, head of the Owl Research Institute in Montana. "This is the most significant wildlife event in decades," added Holt, who has studied snowy owls in their Arctic tundra ecosystem for two decades. Holt and other owl experts say the phenomenon is likely linked to lemmings, a rodent that accounts for 90 percent of the diet of snowy owls during breeding months that stretch from May into September. The largely nocturnal birds also prey on a host of other animals, from voles to geese. An especially plentiful supply of lemmings last season likely led to a population boom among owls that resulted in each breeding pair hatching as many as seven offspring. That compares to a typical clutch size of no more than two, Holt said. Greater competition this year for food in the Far North by the booming bird population may have then driven mostly younger, male owls much farther south than normal. Research on the animals is scarce because of the remoteness and extreme conditions of the terrain the owls occupy, including northern Russia and Scandinavia, he said. The surge in snowy owl sightings has brought birders flocking from Texas, Arizona and Utah to the Northern Rockies and Pacific Northwest, pouring tourist dollars into local economies and crowding parks and wildlife areas. The irruption has triggered widespread public fascination that appears to span ages and interests. "For the last couple months, every other visitor asks if we've seen a snowy owl today," said Frances Tanaka, a volunteer for the Nisqually National Wildlife Refuge northeast of Olympia, Washington. But accounts of emaciated owls at some sites -- including a food-starved bird that dropped dead in a farmer's field in Wisconsin -- suggest the migration has a darker side. And Holt said an owl that landed at an airport in Hawaii in November was shot and killed to avoid collisions with planes. He said snowy owl populations are believed to be in an overall decline, possibly because a changing climate has lessened the abundance of vegetation like grasses that lemmings rely on. This winter's snowy owl outbreak, with multiple sightings as far south as Oklahoma, remains largely a mystery of nature. "There's a lot of speculation. As far as hard evidence, we really don't know," Holt said.