First article in this EarthSkyNews post is about potential magnetic pole switch
that may/may not occur here on Earth.
Since science theorizes that birds "see" magnetic fields which helps them
navigate, wondering what affect a magnetic pole change might have on the birds?
https://www.sciencealert.com/birds-see-magnetic-fields-cryptochrome-cry4-photoreceptor-2018
Just something else to worry about today.... (sorry)
Ceci & friends at
The Far Side Farmthefarsidefarm@xxxxxxxxx
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| July 22
Magnetic Pole Swap Soon? |
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| Earth’s magnetic field extends from our planet's interior into space. It's
like an invisible force field, protecting earthly life from harmful solar
radiation. This field is continuously changing. Earth's history includes
numerous global magnetic reversals, where north and south magnetic poles swap
places. Image via NASA Goddard Space Flight Center. |
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| Are the Earth’s magnetic poles about to swap places? |
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| Earth’s last polar reversal happened 780,000 years ago. Are we facing another
one soon? Hear from the authors of a new study, on a strange anomaly that might
be a clue. Read more. |
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A powerful 7.8-magnitude quake struck Alaska last night
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| Residents of coastal Alaska woke to the sounds of sirens and phone alerts
last night, warning them of a possible tsunami. Many quickly left home, moving
to higher ground. The warnings followed a 7.8-magnitude earthquake that struck
off coastal Alaska at around 10:15 p.m., local time. The earthquake was
centered offshore, 60 miles (98 km) south-southeast of Perryville, Alaska,
according to the US Geological Survey. Read more. |
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| Help EarthSky keep going ... and help feed a child |
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Wow! We're on Day 3 of our yearly crowd-funding campaign, and your response has
been amazing. We are so grateful. Click here to donate and learn more. This
year, 8.5% of all donations will go to No Kid Hungry.
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| Northern Cross: Backbone of the Milky Way |
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| On summer evenings this month, look for the Northern Cross in the east. Then,
if you've got a dark sky, look for a hazy band behind it. The “haze” is really
myriad stars in our own Milky Way galaxy. Read more. |
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EarthSky needs your help to keep going 🙏🏼❤️📸🌙
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Your support, comments, photos, suggestions for stories - and your stories on
how you use, value and love EarthSky’s content - all make our days bright.
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| Tonight … Waxing crescent moon |
| You might also see Regulus, the brightest star in the constellation Leo the
Lion, near tonight's moon. The moon and Regulus are closest from our North
America perspective tonight (July 22). Tomorrow night, the moon will be near
Comet NEOWISE, on the night of the comet's closest approach to Earth. Read
about the waxing moon, and read about the comet. |
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| How to see Comet NEOWISE |
| Location of Comet NEOWISE from July 20 to 26. Face northwest at dusk,
avoiding trees or buildings, to have a clear view of the northwest horizon. Be
sure to bring along your binoculars, although some in country locations say
they can view the comet with the eye alone. Tomorrow, Comet NEOWISE will be
closest to Earth and also near the moon in the west after sunset. Don't miss
it. |
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| Submit your photo to EarthSky here! |
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