#eclipse2017

[itsfullofstars]

Deep Corona by DJMcCrady https://flic.kr/p/WTbYmH

[dawnowar]

I was working for the last eclipse we could see in Ohio. I didn't have glasses but I managed to get a selfie through the trees. I'll be at work again for tomorrow's eclipse. My boss gave us all eclipse glasses. I thought he knew it was during work hours but he bought a pack and had extras. Thought it was going to be after work. I'll be in the north of Columbus just south of the totality line seeing what I can see from the work parking lot. The news keeps warning us to have gas and snacks in the car anticipating a traffic jam. #throwback #eclipse2017 #eclipse2024

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A post shared by Dawn Owar (@dawnowar)

[skycrorg]

Si te quedaste sin gafas para ver el eclipse, encuentra 3 formas sencillas de verlo

El astrónomo Homer Dávila te explica cómo resolver de forma rápida el problema que has de estar experimentando al no poder contar con gafas solares para ver el eclipse. Mira el vídeo a continuación El método de los vidrios de soldadura con DIN #12 inclusive es aceptado y recomendado por la NASA. Véase: https://eclipse2017.nasa.gov/safety

[greggs-mistflower]

DON'T USE GENERAL WELDING GOGGLES ON AN ECLIPSE!

I hate that the only way to rebut @jeanjauthor is to give it more visibility, & Tumblr can show a reply separated from dangerous crap.

The American Astronomical Society says that welding filters shade 12 might be too bright, 13 or 14 is decent ... but 13 and 14 are rare in stores *because very few welding jobs are that bright, so almost all googles out there are not that protective*. So using almost all welding goggles risks eye damage. Retinas don't have pain receptors so it's easy to damage your eyes. Sources, & one has more sources:

https://eclipse.aas.org/eye-safety

https://phillips-safety.com/welding-safety/can-i-use-welding-glasses-to-look-at-the-sun/

"Unbelievably" cold is silly, or you'd get frost every sunset. At most maybe a 15 °F drop starting about an hour before, returning to almost normal maybe an hour after. If it's cloudy or humid, less. Example:

https://eclipse2017.nasa.gov/temperature-change-during-totality

Re: the April 8 eclipse: OK, this is worth knowing

When I was looking at the path of the eclipse’s totality the other day, I underestimated how far the zone of partial eclipse might reach across the Atlantic, even though the shadow of totality proper had already lifted away from the planet’s surface.

So if you’re in the UK or Ireland, you’ll be able to see a little of it before sunset (weather permitting, of course). The usual warnings: do NOT attempt to look at this without eclipse glasses or other similar eye protection.

Here’s a diagram showing where and how long the partial eclipse can be seen. (The full article is here, courtesy of Yahoo.) …Not so much a wolf eating the Sun, as one taking a little bite of it and then the Sun hurriedly saying UM, NO THANKS and then setting.

[sambarsky]

112.) My eclipse sweater. Made it to wear during the solar eclipse on 8/21/17. Hope to wear it during the 2024 eclipse and to travel to a location with the full eclipse as well and have T-shirts of it available by then. #sambarsky #sambarskysweaters #sambarskyknitter #knit #knitting #knitter #art #artist #sweater #intarsia #handknit #eclipse #solareclipse #eclipse2017 #solareclipse2017 #sun #moon #sky #lunareclipse #moon #solar #lunar #totaleclipse https://www.instagram.com/p/CrKSjkzN1ZA/?igshid=NGJjMDIxMWI=

[aintquiteright]

Eye in the sky by irockutah

[unexplainedthings]

[anumberofhobbies]

Here’s something from NASA since I have no interest in Instagram, https://eclipse2017.nasa.gov/what-color-sun

As with all matter, the sun emits a “black body spectrum” that is defined by its surface temperature. A black body spectrum is the continuum of radiation at many different wavelengths that is emitted by any body with a temperature above absolute zero. For our sun, this black body curve or “Plank Function” is a smooth almost bell shaped curve involving electromagnetic (EM) radiation at many different wavelengths from very long infrared to very short ultraviolet wavelengths. During very hot, explosive, high energy solar flare events, the sun emits huge amounts of x-ray and gamma ray radiation as well, up to over 100 MeV energies and up to 1032 ergs of energy over only a few seconds or tens of seconds! These massive solar flares are huge explosions in the sun’s atmosphere caused by the sudden release of magnetic field energy and tend to occur near solar maximum. The flares also accelerate charged particle plasmas to high speeds resulting in radio emission. So, the sun actually emits energy at all wavelengths from radio to gamma ray. But, as can be seen in the image above, it emits most of its energy around 500 nm, which is close to blue-green light. So one might say that the sun is blue-green! This maximum radiation frequency is governed by the sun’s surface temperature, around 5,800K. A higher surface temperature would result in a shorter maximum wavelength and our sun might peak in the blue or violet part of the spectrum (or even the ultra violet!). A lower surface temperature, and our sun’s spectrum might peak in the yellow or orange or even red part of the spectrum. But this is physics, not perception. I must note here another spectral signature from the sun, the photon flux. If we use the relationship found by Max Planck, E = hf (that is Energy = the Planck Constant times the Frequency) and convert the solar irradiance into photon counts, the spectral signature across visible wavelengths is much flatter and the sun is perceived as more yellow.

If we were above the atmosphere, say on the International Space Station and looked at the sun (through our filtered visor), the sun would appear white! Why? Because though the sun emits strongest in the green part of the spectrum, it also emits strongly in all the visible colors – red through blue (400nm to 600nm). Our eyes which have three color cone cell receptors, report to the brain that each color receptor is completely saturated with significant colors being received at all visible wavelengths. Our brains then integrate these signals into a perceived white color.

Here on Earth, the atmosphere plays a role in the color of the sun. Since shorter wavelength blue light is scattered more efficiently than longer wavelength red light, we lose some of the blue tint of the sun as sunlight passes through the atmosphere. In addition, all wavelengths of visible light passing through our atmosphere are attenuated so that the light that reaches our eyes does not immediately saturate the cone receptors. This allows the brain to perceive color from the image with a little less blue – yellow. Though it does not affect what our eyes see, all x-ray and gamma ray radiation is filtered out before it comes close to the ground. Most UV is absorbed by stratospheric ozone (above 10km) and most IR is absorbed by water vapor and other molecules with non - zero dipole moments.

Of course, when sunlight passes through a lot of atmosphere as is the case with sunrises and sunsets, even more blue light is scattered and a much greater percentage of the longest wavelength (red) light makes it to our eyes.

So, you see, there is no simple answer to this question, but the good news is that you can defend almost any answer!

https://www.instagram.com/reel/Cs9Z8vbsFky/?igshid=ZjUwM2YwMzA3MA==

[as-warm-as-choco]

Flying during a Solar Eclipse (X) 

Νεφέλη, look at this beauty!

[karlrincon]

Here’s the best view of Solar Eclipse. Amazing! via :  Fiorella Ikeue‏

[nasa]

Everything You Need to Know About the Aug. 21 Eclipse

On Aug. 21, all of North America will experience a solar eclipse.

If skies are clear, eclipse-watchers will be able to see a partial solar eclipse over several hours, and some people – within the narrow path of totality – will see a total solar eclipse for a few moments.

How to Watch

It’s never safe to look at the Sun, and an eclipse is no exception. During a partial eclipse (or on any regular day) you must use special solar filters or an indirect viewing method to watch the Sun.

If you have solar viewing glasses, check to make sure they’re safe and undamaged before using them to look at the Sun. Make sure you put them on before looking up at the Sun, and look away before removing them. Eclipse glasses can be used over your regular eyeglasses, but they should never be used when looking through telescopes, binoculars, camera viewfinders, or any other optical device.

If you don’t have eclipse glasses, you can still watch the eclipse indirectly! You can make a pinhole projector out of a box, or use any other object with tiny holes – like a piece of cardstock with a hole, or your outstretched, interlaced fingers – to project an image of the partially eclipsed Sun onto the ground.

Of course, if it’s cloudy (or you’d just rather stay inside), you can watch the whole thing online with us at nasa.gov/eclipselive. Tune in starting at noon ET.

If you’re in the path of totality, there will be a few brief moments when it is safe to look directly at the eclipse. Only once the Moon has completely covered the Sun and there is no light shining through is it safe to look at the eclipse. Make sure you put your eclipse glasses back on or return to indirect viewing before the first flash of sunlight appears around the Moon’s edge.

Why do eclipses happen?

A solar eclipse happens when the Moon passes directly between the Sun and Earth, casting its shadow down on Earth’s surface. The path of totality – where the Moon completely covers the Sun – is traced out by the Moon’s inner shadow, the umbra. People within the Moon’s outer shadow, the penumbra, can see a partial eclipse.

The Moon’s orbit around Earth is tilted by about five degrees, meaning that its shadow usually doesn’t fall on Earth. Only when the Moon lines up exactly between the Sun and Earth do we see an eclipse.

Though the Sun is about 400 times wider than the Moon, it is also about 400 times farther away, making their apparent sizes match up almost exactly. This is what allows the Moon to block out the Sun’s bright face, while revealing the comparatively faint, pearly-white corona.

The Science of Eclipses

Eclipses are a beautiful sight to see, and they’re also helpful for our scientists, so we’re funding eleven ground-based science investigations to learn more about the Sun and Earth.

Total solar eclipses reveal the innermost regions of the Sun’s atmosphere, the corona. Though it’s thought to house the processes that kick-start much of the space weather that can influence Earth, as well as heating the whole corona to extraordinarily high temperatures, we can’t study this region at any other time. This is because coronagraphs – the instruments we use to study the Sun’s atmosphere by creating artificial eclipses – must cover up much of the corona, as well as the Sun’s face in order to produce clear images.

Eclipses also give us the chance to study Earth’s atmosphere under uncommon conditions: the sudden loss of solar radiation from within the Moon’s shadow. We’ll be studying the responses of both Earth’s ionosphere – the region of charged particles in the upper atmosphere – and the lower atmosphere.

Learn all about the Aug. 21 eclipse at eclipse2017.nasa.gov, and follow @NASASun on Twitter and NASA Sun Science on Facebook for more. Watch the eclipse through the eyes of NASA at nasa.gov/eclipselive starting at 12 PM ET on Aug. 21. 

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

[aorists]

a bit late but here's the moon and the sun being in love and stuff 🌒

twitter / ig / prints

[thecrimsonarcher]

Can you believe it's already been a year since we seen the solar eclipse? I cannot put into words how enchanting the eclipse was. We were truly blessed to have this privilege to join our friends, family, and strangers for a brief period of harmony. The joy, excitement, and togetherness we expressed on that day was inspiring, a bright spot in the darkness of all the events that had occurred in the weeks prior. As the moon slowly hovered over the brilliant sun, I watched as darkness fell over the mountains and cascaded across the lake before it washed over us. The horizon was aflame with the same colors as sunset; orange, yellow, pink, and gold. The blue sky was blotted out by the stillness of night. The silence that followed was eerie. Birds stopped singing. Cicadas began to sing their evening songs. The entire place was still until totality began. It was a powerful reminder that nature will always hold complete dominion over humanity. All we can hope to do is watch the skies and try to understand our universe and the heavens above. The moment the sun and moon joined together for those fleeting 2 minutes and 38 seconds, you could feel this deep connection between yourself and the cosmos. You weren't just an individual, an island in the vast sea of humanity. You were a denizen of the universe, floating together as one in an ocean of stars. #solareclipse #eclipse2017 #oneyearanniversary #totality #beautiful #nature #blackholesun #cosmos #sky #tennessee

[taoofbill]

Incredible shot by NASA

[sambarsky]

112.) My eclipse sweater. Made it to wear during the solar eclipse on 8/21/17. Hope to wear it during the 2024 eclipse and to have T-shirts of it available by then. #sambarsky #sambarskysweaters #sambarskyknitter #knit #knitting #knitter #art #artist #sweater #intarsia #handknit #eclipse #solareclipse #eclipse2017 #solareclipse2017 #sun #moon #sky #august212017 #8212017 #lunareclipse #moon #moonelcipse #lunar (at Arbutus Branch Library) https://www.instagram.com/p/CVRmYOatsu7/?utm_medium=tumblr

[maxofs2d]