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High-latitude sky watchers should be alert for auroras this week
Space Weather News for April 20, 2015
http://spaceweather.com High-latitude sky watchers should be alert for auroras this week when a solar wind stream and a faint CME are expected to hit Earth's magnetic field in quick succession. NOAA forecasters estimate a 45% to 65% chance of polar geomagnetic storms on April 21-22. At the same time, Earth will be passing through a stream of debris from Comet Thatcher, source of the annual Lyrid meteor shower. Sky watchers are already seeing a smattering of late-night fireballs as Earth approaches the diffuse core of the debris stream. Meteor rates are expected to crest on April 22-23 with as many as 20 Lyrids per hour. Visit http://spaceweather.com for updates and observing tips. |
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High-latitude sky watchers should be alert for auroras this week
On Monday, April 20, 2015 at 10:37:24 PM UTC+1, Sam Wormley wrote:
Space Weather News for April 20, 2015 http://spaceweather.com High-latitude sky watchers should be alert for auroras this week when a solar wind stream and a faint CME are expected to hit Earth's magnetic field in quick succession. NOAA forecasters estimate a 45% to 65% chance of polar geomagnetic storms on April 21-22. At the same time, Earth will be passing through a stream of debris from Comet Thatcher, source of the annual Lyrid meteor shower. Sky watchers are already seeing a smattering of late-night fireballs as Earth approaches the diffuse core of the debris stream. Meteor rates are expected to crest on April 22-23 with as many as 20 Lyrids per hour. Visit http://spaceweather.com for updates and observing tips. Tell me Sam ,as possibly the one person left in saa that I would care to respond to, what do you think causes the seasons just by look at the article in that website ? - http://spaceweathergallery.com/full_...1429732837.jpg If you stood in front of your students and told them that there are two daylight/darkness cycles to consider with a slight shift of attention towards the year long polar day/night cycle you would be half way there to teaching them that the Earth has dual surface rotations - all planets do. The only explanations presently are the cringing 'earth tilts towards and away from the sun' in lieu of not accepting the necessary surface rotation where the North/South poles are seen to move parallel to the orbital plane. Truly remarkable !. |
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