Extreme Solar Flares
Select Category:
Category Member Latest Featured
New Biman Bangladesh 777-300ER landing Heathrow HD
0:00:18
New Biman Bangladesh 777-300ER landing Heathrow HD
754 views
From: deshi
Two Nights of Northern Lights (Aurora Borealis)
0:01:56
Two Nights of Northern Lights (Aurora Borealis)
426 views
From: deshi
Norway: Solar storm sparks dazzling northern lights
0:00:40
Norway: Solar storm sparks dazzling northern lights
424 views
From: deshi
London Fireworks 2012 New Years Eve!!!!! HQ Please subscribe if you like it
0:12:14
London Fireworks 2012 New Years Eve!!!!! HQ Please subscribe if you like it
401 views
From: deshi
Gaddafi praises his supporters
0:02:15
Gaddafi praises his supporters
714 views
From: deshi
HUGE PRO GADDAFI RALLY in Tripoli
0:01:47
HUGE PRO GADDAFI RALLY in Tripoli
674 views
From: deshi
My Shocking Story First 5 Minutes
0:05:09
My Shocking Story First 5 Minutes
774 views
From: deshi
9/11 and Who Rules Saudi Arabia
0:16:12
9/11 and Who Rules Saudi Arabia
653 views
From: deshi
Bangla Tv LA
0:13:21
Bangla Tv LA
695 views
From: deshi
BANGLA TV LA
0:03:26
BANGLA TV LA
736 views
From: deshi
Air Plane Fireworks !
0:00:15
Air Plane Fireworks !
732 views
From: deshi
SAUDI ARABIA - UNDER THE VEIL
0:09:48
SAUDI ARABIA - UNDER THE VEIL
942 views
From: deshi
Killdozer Helicopter News Footage
0:10:32
Killdozer Helicopter News Footage
781 views
From: deshi
Mad guy bulldozers town
0:01:38
Mad guy bulldozers town
786 views
From: deshi
কলকাতা Kolkata (Calcutta) Part 5 - West Bengal, India
0:01:44
কলকাতা Kolkata (Calcutta) Part 5 - West Bengal, India
749 views
From: deshi
কলকাতা Kolkata (Calcutta) Part 3 - West Bengal, India
0:01:44
কলকাতা Kolkata (Calcutta) Part 3 - West Bengal, India
821 views
From: deshi
কলকাতা Kolkata (Calcutta) West Bengal, India
0:01:44
কলকাতা Kolkata (Calcutta) West Bengal, India
813 views
From: deshi
Forbidden Harvest: IDF detain Palestinian children during harvesting (Operation Dove)
0:04:59
Forbidden Harvest: IDF detain Palestinian children during harvesting (Operation Dove)
861 views
From: deshi
Israeli Settler Hits Sheep with his Rifle near At-Tuwani (CPT)
0:01:26
Israeli Settler Hits Sheep with his Rifle near At-Tuwani (CPT)
911 views
From: deshi
Israeli Soldiers Threaten Christian Peacemaker Team in Hebron
0:01:54
Israeli Soldiers Threaten Christian Peacemaker Team in Hebron
951 views
From: deshi
See all 47 videos
Rate Sign in to rate
Views: 412
From: deshi
Added: 2012-01-28
Category: Elsewhere
Duration: 0:02:53
Video Description: From NASA's Scientific Visualization Studio. Solar flares may seem like far-away events, but they can damage satellites and even ground-based technologies and power grids. Every 11 years, as the sun reaches its maximum activity they become bigger and more common, and that increases the chances that one will significantly affect Earth.

So what are these solar eruptions? A solar flare is basically an explosion on the surface of the sun ranging from minutes to hours in length. Large flares can release enough energy to power the entire United States for a million years. Flares happen when the powerful magnetic fields in and around the sun reconnect. They're usually associated with active regions, often seen as sunspots, where the magnetic fields are strongest.

Flares are classified according to their strength. The smallest ones are B-class, followed by C, M and X, the largest. Similar to the Richter scale for earthquakes, each letter represents a ten-fold increase in energy output. So an X is 10 times an M and 100 times a C. Within each letter class, there is a finer scale from 1 to 9. C-class flares are too weak to noticeably affect Earth.

M-class flares can cause brief radio blackouts at the poles and minor radiation storms that might endanger astronauts. It's the X-class flares that are the real juggernauts. Although X is the last letter, there are flares more than 10 times the power of an X1, so X-class flares can go higher than 9. The most powerful flare on record was in 2003, during the last solar maximum. It was so powerful that it overloaded the sensors measuring it. They cut out at X17, and the flare was later estimated to be about X45.

A powerful X-class flare like that can create long lasting radiation storms, which can harm satellites, and even give airline passengers flying near the poles small radiation doses. X flares also have the potential to create global transmission problems and worldwide blackouts.

The seriousness of an X-class flare pointed at Earth is why NASA and NOAA constantly monitor the sun. NASA's Heliophysics fleet of spacecraft can now see the sun from every side and in many different wavelengths. This unprecedented coverage is enabling scientists to predict and detect space weather events like flares and CMEs with ever greater accuracy. With advance warning, governments and companies can take steps to protect their technological infrastructure, so that the worst scenarios will never happen.

Add comment


Security code
Refresh

Home | Directory | Google Search

Copyright © 2011 Bangla.com. Designed by Akm Poweredby.Biz

rss feedfacebooktwitter g+

top