Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 

Extreme Solar Activity May Cause Auroras Over NZ

Extreme Solar Activity

One of the most powerful solar flares in years, a remarkable X17-category explosion, erupted from giant sunspot 486 this morning at approximately 1110 UT and, as a result, a strong solar radiation storm is in progress.

(Click here to learn about the effects of such storms.) The explosion hurled a coronal mass ejection (CME) directly toward Earth. When it left the sun, the cloud was traveling 2125 km/s (almost 5 million mph). This CME could trigger bright auroras when it sweeps past our planet perhaps as early as tonight.


Above: This SOHO coronagraph image captured at 12:18 UT shows the coronal mass ejection of Oct. 28th billowing directly toward Earth. Such clouds are called halo CMEs. The many speckles are solar protons striking the coronagraph's CCD camera. See the complete movie.

Where will the auroras appear?

High-latitude sites such as New Zealand, Scandinavia, Alaska, Canada and US northern border states from Maine to Washington are favored, as usual, but auroras could descend to lower latitudes when the CME described above sweeps past Earth.

Not all CMEs trigger auroras. Several, for instance, have swept past Earth in recent days without causing widespread displays. It all depends on the orientation of tangled magnetic fields within the electrified cloud of gas. The incoming CME is no exception. It might cause auroras, or it might not. We will find out when it arrives.

Info courtesy of Spaceweather.com


© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Media Mega Merger: StuffMe Hearing Argues Over Moveable Feast

New Zealand's two largest news publishers are appealing against the Commerce Commission's rejection of the proposal to merge their operations. More>>

Elsewhere:


Approval: Northern Corridor Decision Released

The approval gives the green light to construction of the last link of Auckland’s Western Ring Route, providing an alternative route from South Auckland to the North Shore. More>>

ALSO:


Crown Accounts: $4.1 Billion Surplus

The New Zealand Government has achieved its third fiscal surplus in a row with the Crown accounts for the year ended 30 June 2017 showing an OBEGAL surplus of $4.1 billion, $2.2 billion stronger than last year, Finance Minister Steven Joyce says. More>>

ALSO:

Mycoplasma Bovis: One New Property Tests Positive

The newly identified property... was already under a Restricted Place notice under the Biosecurity Act. More>>

Accounting Scandal: Suspension Of Fuji Xerox From All-Of-Government Contract

General Manager of New Zealand Government Procurement John Ivil says, “FXNZ has been formally suspended from the Print Technology and Associated Services (PTAS) contract and terminated from the Office Supplies contract.” More>>