03 Nov Coronal Holes

Coronal Holes

Details on the topic “Coronal Holes”

Relevance for Prelims: Space Technology, Cosmic findings.

Relevance for Mains: Significance of It, Maunder Minimum

Context: Recently, NASA has captured an image that shows dark patches on the surface of the sun resembling a smile and the sun.

About :

     Pic: Coronal Holes

• They gush out solar winds into space.
• They are comparatively colder and appear darker than their surrounding as soar material is less.
• Coronal Holes last between a few weeks to months.
• Solar Minimum, is a period of time when the Sun’s activity is substantially diminished.
• Their number waxes and wanes in cycles that last 11 years approximately

Significance :

1. They help in understanding the environment of space.

Maunder Minimum:

• Contrary to this, sunspot activity may be correlated with the climate on earth. In the period between 1645 and 1715, sunspot activity had come to a halt on the Sun – a phenomenon referred to as the Maunder minimum.
• This coincided with extremely cold weather globally. So, sunspots may have relevance to the climate on earth.
• Such links are tenuous, but solar activity affects space weather, which can have an impact on space-based satellites, GPS, power grids, and so on.

Current Affairs for UPSC

Get Daily Current Affairs for UPSC from Plutus IAS. Acquire knowledge about national and international information from Updated daily current affairs from our Daily Current Affairs for UPSC site. The topic described above is related to Science and Technology. Without Current Affairs for UPSC, None can pass any competitive examination.

Source: Indian Express 

Plutus IAS current affairs 3 November 2022

Rishabh