😁🤣

I'm game! 😉

Reblog if its ok to message you during this holiday season incase Im feeling lonely or out of place during family events because no one should be alone on Christmas

Tony Stark being happy

reblog if u agree

How Airglow Can Help Us Understand the Sun’s Influence on Earth

You may have seen the famous blue marble or pale blue dot images showing Earth from 18,000 and 3.7 billion miles away, respectively. But closer to home — some 300 miles above Earth’s surface — you might encounter an unfamiliar sight: vibrant swaths of red and green or purple and yellow light emanating from the upper atmosphere.

This light is airglow.

Airglow is created when atoms and molecules in the upper atmosphere, excited by sunlight, emit light to shed excess energy. Or, it can happen when atoms and molecules that have been ionized by sunlight collide with and capture a free electron. In both cases, these atmospheric particles emit light in order to relax again. The process is similar to how auroras are created, but while auroras are driven by high-energy solar wind, airglow is energized by day-to-day solar radiation.

Since sunlight is constant, airglow constantly shines throughout Earth’s atmosphere, and the result is a tenuous bubble of light that closely encases our planet. Its light is too dim to see easily except in orbit or on the ground with clear, dark skies and a sensitive camera — it’s one-tenth as bright as the light given off by all the stars in the night sky.  

Airglow highlights a key part of our atmosphere: the ionosphere. Stretching from roughly 50 to 400 miles above Earth’s surface, the ionosphere is an electrified layer of the upper atmosphere generated by extreme ultraviolet radiation from the Sun. It reacts to both terrestrial weather below and solar energy streaming in from above, forming a complex space weather system. Turbulence in this ever-changing sea of charged particles can manifest as disruptions that interfere with Earth-orbiting satellites or communication and navigation signals.

Understanding the ionosphere’s extreme variability is tricky because it requires untangling interactions between the different factors at play — interactions of which we don’t have a clear picture. That’s where airglow comes in. Each atmospheric gas has its own favored airglow color, hangs out at a different height and creates airglow by a different process, so we can use airglow to study different layers of the atmosphere.

Airglow carries information on the upper atmosphere’s temperature, density, and composition, but it also helps us trace how particles move through the region itself. Vast, high-altitude winds sweep through the ionosphere, pushing its contents around the globe — and airglow’s subtle dance follows their lead, highlighting global patterns.

Two NASA missions take advantage of precisely this effect to study the upper atmosphere: ICON — short for Ionospheric Connection Explorer — and GOLD — Global-scale Observations of the Limb and Disk.

ICON focuses on how charged and neutral gases in the upper atmosphere behave and interact, while GOLD observes what drives change — the Sun, Earth’s magnetic field or the lower atmosphere — in the region.

By imaging airglow, the two missions will enable scientists to tease out how space and Earth’s weather intersect, dictating the region’s complex behavior.

Keep up with the latest in NASA’s airglow and upper atmosphere research on Twitter and Facebook or at nasa.gov/sunearth.

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

Okay, so to everyone who wanted Tony to survive, listen

I know it was terrible to watch him die, I cried my eyes out as well. But don’t you dare say it was a bad writing decision to have him die, or that he “deserved better”.

What exactly would have been better? You say he should have grown old with his family - but think about all the times when after a terrible battle he was working none stop, getting paranoid and frustrated with everything. He never got his rest before, do you think after everything that went down in endgame he could?

We saw his biggest fear in every movie he was in and in infinity war his nightmare became a reality: everyone died right in front of him.

He had always feared to see his loved ones die, leaving him to stay behind on his own, with the terrible thought in his head that he could have done more.

But now he did everything he could, and it was enough. He actually got the closure he deserved. He was able to die, knowing he did the right thing, after meeting his father one last time, after saving everyone he had lost, after hearing Pepper say that it would be okay. He could finally and truly be at peace. He could finally rest.

OMG! 😍😍 Where is this from??

103 year old Ruline Steininger casts a vote for Hillary Clinton in Iowa, as early voting began in the state.

She was born in 1913 when women were banned from voting, and born even before the First World War began.

She has voted in every election since 1936, when she first cast her vote for Franklin Delano Roosevelt, and earlier this year has sent a letter to Hillary saying:

“In my first century of life, I’ve seen many incredible things” “A pandemic, two worldwide depressions, a cure for polio, the first Catholic president, a man on the moon, the end of smallpox, an attack on American soil, and a black president. In my second century, I look forward to seeing a woman president.”

Kind of really sobering when you really think about the fact that there are people in this country who are alive at this moment and lived at a time when universal suffrage hadn’t existed yet. (X)

5’6 but feel so much shorter 😕😑😶😵

Reblog if you're shorter than 5'8.

If you don’t reblog this, you are on duty to get the cookies off the top shelf. You have been notified.

😍 squeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!!!!!!!!!!!!! 😘😍🙃🙂❤️💕

*no words*

(x)

🎉🎉😊🎂🍺

Happy 35th birthday Christopher Robert Evans (born June 13, 1981)