Showing posts with label sun. Show all posts
Showing posts with label sun. Show all posts

Thursday, March 29, 2012

Giant Solar Tornado Caught In NASA Video



Monster Solar Tornadoes Discovered -- MSNBC/Discovery News

Tempests measure width of several Earths and swirl at speeds of up to 190,000 miles

For the first time, huge solar tornadoes have been filmed swirling deep inside the solar corona — the sun's superheated atmosphere. But if you're imagining the pedestrian tornadoes that we experience on Earth, think again.

These solar monsters, measuring the width of several Earths and swirling at speeds of up to 190,000 miles per hour, aren't only fascinating structures; they may also trigger violent magnetic eruptions that can have drastic effects on our planet.

Read more ....

Wednesday, August 10, 2011

Sun Unleashes Largest Solar Flare In Five Years



Sun Unleashes Largest Solar Flare In Five Years, Sending 10Billion Ton Storm Cloud Hurtling Through Space At 5Million MPH -- Daily Mail

The sun unleashed an unusually powerful solar flare yesterday, the largest in nearly five years.

The eruption launched a ten billion ton storm cloud hurtling through space at five million miles per hour.

Scientists said the event took place on the side of the sun that was not facing Earth, so there will be little impact to satellites and communication systems.

Read more ....

My Comment
: 10 billion tons .... that certainly makes one feel very small.

Monday, August 8, 2011

Three Solar Flares Spark Power Grid Concerns

Solar Flare Aug. 4 This still from a video shows the CME lifting off from sunspot 1261. NASA/SDO

Video: Three Solar Flares Spark Power Grid Concerns And Ignite Auroras In The Upper United States -- Popular Science

A trifecta of sunsplosions over the past few days has prompted government agencies to once again warn of possible power and communications disruptions. The coronal mass ejections could produce a strong aurora as far south as Minnesota and Wisconsin, according to space weather forecasters at NOAA.

Read more ....

Monday, August 1, 2011

Magnetic Waves Help Make Sun’s Atmosphere Hotter


Powerful Magnetic Waves Help Make Sun’s Atmosphere Hotter Than Sun Itself -- Discover Magazine

What’s the News: An international team of researchers, led by the National Center for Atmospheric Research, has learned that large magnetic waves are partly to blame for the Sun’s immensely hot corona. The study, published in the journal Nature, also suggests that the waves could be the driving force behind the solar wind.

Read more ....

Monday, June 13, 2011

What Could A Solar Flare Do To Us?

CME NASA

When The Sun Unleashed Its Plasma Blast This Week, Earth Got Lucky -- Popular Science

What a predicted 2013 blast from the sun could mean for the U.S.

On Tuesday, the biggest solar flare in four years erupted from the sun, sending a mass of charged particles hurtling towards Earth. NASA announced that it was an M-2 (medium-sized) flare and an S1-class (minor) radiation storm. The electromagnetic pulse it induced created amazing auroras, but it could also damage satellites and radio communications. What would happen with an even stronger, larger flare? Something terrible...

Read more ....

Tuesday, March 8, 2011

A Global Katrina Sun Storm

The Sun is waking up from a quiet period and is likely to throw a lot more 'space weather' at the Earth, according to the Government's chief scientist Photo: GETTY

Sun Storm May Be 'Global Katrina' -- The Telegraph

The risk of a devastating space storm wreaking havoc like a "global Katrina" and costing the world trillions of pounds should be taken "seriously", claims Britain's top scientist.

Professor Sir John Beddington, the Government's chief scientist, said that the Sun was waking up from a quiet period and was likely to throw a lot more "space weather" at the Earth.

Also, the world was increasingly vulnerable to damage because of our dependence on satellites, communication networks and computer devices.

If a solar storm hit the Earth, it could throw out navigation systems, crash stock markets, ground aircraft and cause power cuts.

The financial fallout could cost £1.2 billion in the US alone, claim experts.

Read more ....

My Comment: If it happens .... grab a few good books and kill the time until everything gets back to normal.

Tuesday, February 8, 2011

Solar Physicists Will Soon have Their First 360-Degree View Of Our Star

Image: The Stereo satellites are already feeding data into space weather forecasts

Stereo Satellites Move either Side Of Sun -- BBC

Two US spacecraft have moved either side of the Sun to establish observing positions that should return remarkable new information about our star.

Launched in 2006, the Stereo satellites have gradually been drifting apart - one in front of the Earth in its orbit, the other lagging behind.

On Sunday, Nasa said the spacecraft had arrived at points that put the Sun directly between them.

It will give solar physicists the first 360-degree view of our star.

Read more ....

My Comment: The data from this satellite alignment is probably going to be astounding.

Wednesday, September 22, 2010

Britain Vulnerable To Space Nuclear Attack Or 'Solar Flare' Storm, Conference Told

Dr Fox highlighted warnings from scientists that essential infrastructure such as satellites, could be paralysed by a once-in-a-century solar flare. Photo: NASA

From The Telegraph:

Rogue states such as North Korea and Iran could use nuclear weapons to attack Britain’s vital communications and electricity networks from space, a security conference heard.

In a stark warning, Dr Liam Fox warned countries that sought nuclear capabilities could attack Britain from the upper atmosphere instead of through more traditional “nuclear strikes”.

Read more ....

Tuesday, September 7, 2010

Quiet Sun Leads To Upper Atmosphere Collapse

Solar storms have dropped to unusually low levels from 2007 to 2009.
Credit: SOHO Consortium/ESA/NASA

From Cosmos/AFP:

WASHINGTON: The upper reaches of Earth's atmosphere are unexpectedly shrinking and cooling due to lower ultraviolet radiation from the Sun, U.S. scientists said.

The Sun's energy output dropped to unusually low levels from 2007 to 2009, a significantly long spell with virtually no sunspots or solar storms, according to scientists from the National Center for Atmospheric Research in Boulder, Colorado.

Read more ....

Saturday, September 4, 2010

India To Build World's Largest Solar Telescope

Photo: Currently, the world's largest solar telescope is the McMath-Pierce Solar Telescope, with a diameter of 1.6 metres in Kitt Peak National Observatory at Arizona in the US.

From Space Daily:

India is inching closer towards building the world's largest solar telescope in Ladakh on the foothills of the Himalayas that aims to study the sun's microscopic structure.

The National Large Solar Telescope (NLST) project has gathered momentum with a global tender floated for technical and financial bidding by the Bangalore-based Indian Institute of Astrophysics (IIA).

Read more ....

Thursday, September 2, 2010

NASA Planning Mission To Visit The Sun

Artist Representation of Solar Probe Plus
(Credit: NASA)

From The CBS:

We know it's hot up there but NASA wants to know a bit more about the Sun and its environs. And so sometime before 2018, the agency intends to send a spacecraft into the solar atmosphere.

This will mark the first time that a spacecraft from earth will actually visit a star.

The decision to chart a mission to the Sun also realizes a dream that astronomers almost realized a half century ago, when the National Academy of Science's "Simpson Committee" in 1958 recommended a probe to investigate. Several studies were subsequently carried out testing the feasibility of the project. But nothing came of them.

Read more ....

Thursday, April 22, 2010

Diving Deep Into A Solar Prominence (SDO First Light)

April 21, 2010 -- What you're seeing here is the highest resolution photograph of the sun available to date, part of a brand new series of NASA Solar Dynamics Observatory (SDO) observations. The SDO mission promises "10 times better clarity than a high-definition television," NASA says, and this first SDO image doesn't disappoint.

From Discovery News:

Taken from a series of movies of bubbling plasma erupting to the solar surface, this is a close-up shot of what's called an expanding solar prominence, seen in extreme ultraviolet light. We are basically looking deep into the throat of the fine structure of an eruption on our nearest star.

The light we are seeing in this observation is generated by plasma heated to around 50,000 Kelvin (twice as hot as a bolt of lightning). A solar prominence is a looped structure of hot plasma, wrapped in magnetic fields from the sun's "surface" (or the photosphere), projecting high into the solar atmosphere (the sun's corona). But this is only one of the many eyes of SDO; it is already revolutionizing our understanding of the sun.

Read more ....

Nasa's Solar Dynamics Observatory Returns First Images

SDO sees the Sun's whole disc but can then zoom in to view fine detail

From The BBC:

Nasa's Solar Dynamics Observatory has provided an astonishing new vista on our turbulent star.

The first public release of images from the satellite record huge explosions and great looping prominences of gas.

The observatory's super-fine resolution is expected to help scientists get a better understanding of what drives solar activity.

Launched in February on an Atlas rocket from Cape Canaveral, SDO is expected to operate for at least five years.

Read more
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Thursday, April 15, 2010

Space Storms Could Knock Out National Grid And Sat Navs

From The Telegraph:

Space storms caused by the Sun could knock out power supplies and satellite navigation systems in Britain, claim scientists.

The solar flares and sunspots throw massive clouds of electrically charged gas at the Earth which cause power surges and throw compasses into disarray.

The weather in space has been through an unprecedented calm period in the last century but the researchers believe we could be entering a more volatile period.

Read more
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Wednesday, April 14, 2010

Solar Explosion Tracked All The Way From The Sun To Earth

The Sun imaged with the EIT instrument on the SOHO spacecraft. The eruption event studied by the team originated in the brighter active region slightly above and to the left of centre. (Credit: CDAW/ESA/NASA/Solar Physics)

From Science Daily:

ScienceDaily (Apr. 14, 2010) — An international group of solar and space scientists has built the most complete picture yet of the full impact of a large solar eruption, using instruments on the ground and in space to trace its journey from the Sun to Earth.

Dr Mario Bisi of Aberystwyth University presented the team's results, which include detailed images, on the 13th of April at the RAS National Astronomy Meeting in Glasgow.

Read more ....

Monday, March 22, 2010

Should I Be Worried About Electromagnetic Pulses Destroying My Electronics?

Sun Spots Solar storms, like this one captured by NASA’s STEREO satellite,
could knock out the power grid. NASA

From Popular Science:

It depends on the source of the pulse. Electromagnetic pulses (EMPs) large enough to cause you trouble come in two varieties: those produced by the sun, and those created by a nuclear bomb or another military-grade emitter device. With the sun-related variety, specifically coronal mass ejections (CMEs), your gear will probably be fine. But a really large CME could take down the power grid, says Bill Murtagh, the program coordinator of the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center. Power lines transmit electricity as an alternating current, but a pulse from a CME can introduce a direct current into the system, says Luke van der Zal, a technical executive at the nonprofit Electric Power Research Institute. This can cause transformers to overheat and work sluggishly, or fail altogether.

Read more ....

Wednesday, March 17, 2010

Solar Storms Create 'Killer Electrons'

A stream of charged particles from the Sun hits Earth's magnetosphere. Credit: NASA

From Cosmos:

SYDNEY: 'Killer electrons' - electrons circling Earth that wreck satellites and can cause cancer in astronauts - are created when Solar storms create shockwaves in the Earth's protective magnetic bubble, scientists said.

The Earth's magnetic field abounds with charged, fast moving particles that orbit up to 64,000 km above the surface. When a severe solar storm - a stream of energetic particles emanating from the Sun - hits the Earth's magnetic field, it creates a shockwave that boosts the number of particles by up to ten times as much.

Read more ....

Wednesday, March 3, 2010

Massive Solar Storms of the Future Could Reap Katrina-Scale Devastation

Plasma of the Sun I'm looking at you, Earth Hinode JAXA/NASA

From Popular Science:

If storms as strong as the biggest recorded in the last few two centuries, our electronics-dependent world of today could be in trouble.

No electricity, no running water, and no phone service for millions of people. That scenario could easily become reality if a solar storm as intense as those found throughout the history of our planet were to strike Earth today. NPR reported on FEMA's recent simulation of such a storm, and the grim conditions it uncovered.

Read more
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Thursday, February 25, 2010

The Great Filament


From Watts Up With That?

The Solar and Heliospheric Observatory (SOHO) is tracking an enormous magnetic filament on the sun. It stretches more than one million kilometers from end to end, which makes it an easy target for backyard solar telescopes. For the seventh day in a row, an enormous magnetic filament is hanging suspended above the surface of the sun’s southern hemisphere. The Solar and Heliospheric Observatory (SOHO) has a great view. How long can it last? Solar filaments are unpredictable. If this one collapses and hits the stellar surface, the impact could produce a powerful Hyder flare.

Read more ....

Wednesday, February 17, 2010

The Rhythm of Our Star

An image taken at dusk with TON (Taiwan oscillations of networks). The profile of the house is real. (Credit: Image courtesy of Instituto de Astrofisica de Canarias)

From Science Daily:

Science Daily (Feb. 17, 2010) — When we look at the Sun we cannot penetrate beyond its outer surface, the photosphere, which emits the photons that make up the radiation we can see. So how can we find out what is inside it?

Read more ....