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| NASA Captures Largest Sunspot |
| NASA Captures Largest Sunspot in Two Decades
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| UNITED STATES OF AMERICA
, 25-October-2014
8:50:40 AM |
| NASA's Solar Dynamics Observatory (SDO) has spotted an image of a gigantic sunspot - the largest in last 24 years.
The flare erupted from a particularly large active region dubbed as AR 12192.
The sunspot soon grew to be the largest active region observed in the current solar cycle - a periodic change in the Sun's activity and appearance - which began in 2008.
This is the fourth substantial X-class flare from this active region since October 19.
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"The sunspot region is about 80,000 miles across, which is wide enough for 10 Earths to be laid across its diameter," NASA said in a statement.
X-class denotes the most intense flares, while the number provides more information about its strength.
Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground.
These can also disturb the atmosphere in the layer where GPS and communications signals travel
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