- Posts : 30189
Join date : 2010-04-07
Location : Hawaii
Carol Mon Nov 23, 2020 6:15 am
SUNDIVING COMET ERASMUS: Comet Erasmus (C/2020 S3) will soon be inside the orbit of Mercury. Now passing Venus in the early morning sky, the brightening comet is an easy target for backyard telescopes. It may be visible for only a few more days before the sun's glare swallows it, so set your alarm for dawn and enjoy the show.
BIG SUNSPOT: A new sunspot is rotating over the sun's eastern limb. It is still not fully in view, but we can already see that it is big. The leading dark core is circled in this image from NASA's Solar Dynamics Observatory: Solar wind speed: 554.6 km/sec
The arrival of this sunspot has been anticipated for days. NASA's STEREO-A spacecraft saw it while it was still on the farside of the sun. A series of flares from the sunspot late last week may herald more eruptions in the days ahead, this time Earth-directed.SOLAR WIND SPARKS WEEKEND AURORAS:
Earth is inside a fast-moving stream of solar wind flowing from a northern hole in the sun's atmosphere. First contact on Nov. 21st sparked auroras in the USA as far south as Wyoming:"These were the best auroras I've seen all year," says photographer Kevin Palmer, who photographed the display from the Bighorn Mountains. "At first, the glow was faint, but it became more visible after the Moon set."
Geomagnetic activity has intensified since Palmer took the picture, with G1-class storms breaking out for several hours on Nov. 22nd. Earth is expected to remain inside the solar wind stream for anothr ~24 hours. Northern sky watchers should remain alert for auroras.
What is life?
It is the flash of a firefly in the night, the breath of a buffalo in the wintertime. It is the little shadow which runs across the grass and loses itself in the sunset.
With deepest respect ~ Aloha & Mahalo, Carol