In meteorology, the fall season begins on Sept. 1, however, the September equinox gives us the green light to welcome the astronomical fall season in the Northern Hemisphere . This happens Sept. 22, 2021, at 19:21 UTC,An illustration of the March and September equinoxes. During the equinoxes, both hemispheres receive equal amounts of daylight. Credit: NASA/JPL-Caltech
Along with marking the beginning of astronomical fall, the Sun will be exactly above Earth’s equator, moving from north to south, making day and night nearly equal in length – about 12 hours – throughout the world. At the North Pole, over the upcoming days, the Sun will sink below the horizon for a kind of twilight from now until sometime in October when it will be completely dark, according to NASA solar scientist Mitzi Adams. Spring twilight at the North Pole begins a few weeks before the vernal, or spring, equinox in March, when the Sun rises above the horizon again.
This only happens twice in Earth’s year-long trip around the Sun. The rest of the year, the Sun shines unevenly over the Northern and Southern Hemispheres. That’s because Earth’s axis is tilted with respect to the Sun-Earth plane. But on these special days – the spring and fall equinoxes – the Sun shines almost equally on the Northern and Southern hemispheres.In the Northern hemisphere, the September equinox marks the start of a period bringing us later sunrises and earlier sunsets.
Today, we celebrate the equinox as an astronomical event caused by Earth’s tilt on its axis and its motion in orbit around the Sun.
Viêm Thái Quý :) :D
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Oooo
IT'S BEAUTIFUL!!!!!!!!!!!
Amazing what a scene!!
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It's very wonderfull. Tank you very much for this share. Realy!
It's wonderful.
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Fall is actually my favorite season
good click picture
Surprise!
Our world is beautiful,
For the lazy Australians who go by months, spring started weeks ago 😂
jeanmicheljarre has a legendary piece(s) called 'Equinoxe'
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Wow!!!!!
Awesome sight!
That's an amazing view. Wallpaper worthy.
A space spring! 😀
Assuming that you are American. For the British is autumn
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É primavera
Wow we never have seasons here 😆 what that like It goes from summer to summer to spring here 😆
Beautiful image, thank you.
Welcome fall!!! Hello fallequinox time of pure magical nature beauty!!
Pretty crayctay
Foto más producida que un travesti
Or Autumn .....for those who can spell.
Only Northern Hemisphere homies like this
At'n BeatrizGMuller ojalá comprendas de una vez y para siempre, que la tierra gira alrededor del sol
Weocome new sprint time!!!
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I think I need a house on both hemispheres 😆
looks great
Beautiful wonderful
In the US first day of fall, Autumn for the rest of the Northern Hemisphere
Some may call it Autumn 🍂
It's beautiful 😍 ❤
Y si Cristina no hablaba hijos de puta!
Watch your CHILDREN. Satanic cults will be busy. But at least we know CERN is shut down now.
For us on the equator, life goes on as usual. 😅
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Hi NASA, Something strange fell out of the sky yesterday. I caught it with my car. I put it in a sample bag. Would you like me to send it to you? Best Regards, Vanessa :)
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OMG So Beautiful
지구온난화의 빙하는 계속 녹아내리고 계절의 지각변동이 일어 납니다.
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