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Making the Skies Safe for Unmanned Aircraft

Unmanned Aircraft Systems (commonly known as UAS or drones) are typically a smaller aircraft that fly without an onboard pilot. Currently used for research, testing, and aerial-visual purposes, these vehicles could one day carry cargo, or even passengers, through countryside and city landscapes.

UAS are a key component of our Unmanned Aircraft Systems Integration in the National Aairspace Ssystem (UAS in the NAS) project. Our research will help develop the rules so that unmanned aircraft can safely coexist with manned aircraft in the national airspace.

We collaborate with private companies, like Navmar Applied Science Corporation (NASC), to research and test aerodynamically efficient UAS. We also work with government agencies like the Federal Aviation Administration (FAA) to conduct research that will contribute to setting standards and certifications.

We are leading the nation to open a new era in air transportation called Advanced Air Mobility (AAM). AAM will enable safe, sustainable, affordable, and accessible aviation that moves people and cargo between places using a transformed air transportation system and revolutionary new aircraft.

With new cost-and-fuel efficient aircraft and technologies becoming available, UAS will provide substantial benefit to U.S. industry and the public. Such benefits include air-lifted organ transplant deliveries that arrive more quickly and safely than ever before; and search and rescue missions performed with increased speed and accuracy.

There are other benefits too, like pizza being air- dropped to your front door, and less package delivery trucks on the road. The burgeoning landscape of AAM holds many potentials – and it’s our job to help safely and sustainably map out and navigate what that future landscape looks like.

Want to learn the many ways that NASA is with you when you fly? Visit https://www.nasa.gov/aeronautics. Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.

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Make Your Own Paper Prawn Using This Pattern Designed by Artist Lisa Lloyd

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Artist François Vogel Turns His Unaware Cat into a Wriggling Jellyfish

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It’s Mental Health Month, Tumblr!

Your mental health is important. Because of the coronavirus, people all around the world are experiencing high levels of mental and emotional stress. That’s why this year’s Mental Health Month initiative will focus on common aspects of isolation and loneliness: how to protect, maintain, and improve your mental health, how to manage your relationships inside and outside of your household, how to combat boredom, and how to deal with the grief you might be feeling.

All month long our friends at Ditch the Label (@ditchthelabel), a UK anti-bullying non-profit, will post resources to guide you through some of the emotional hardships you may be feeling right now. Here on @postitforward, we’ll be reblogging the best stuff we see from them, the top-notch stuff we see from the rest of the Tumblr community, and posting exclusive original art from some of our very own Tumblr @creatrs. 

Some of you may be concerned with your mental health for the first time in your life. For others, existing mental health issues may be exacerbated by current events—especially for those of you who may be quarantined with people whose values are at odds with your own. We see you, and we want to help.

If you don’t want to see these posts, that’s okay! Taking good care of your mind comes in many forms. We’ll tag all of our posts with “cw mental health month” as well as more specific tags when appropriate so you can use the tag filtering tool to keep them from your dashboard. And, hey, if you’re looking for a totally stress-free zone, go out and check out Cozy (@cozy)—it’s a blog we created to embrace a little escapism. Otherwise, be sure to give Ditch the Label (@ditchthelabel) a follow if you’re interested in the tools and guidance they will be providing starting May 4.

One last thing: If you or someone you know are struggling and don’t know where to turn to, here’s a list of free counseling services located all over the world

Do your best to take care of yourself, Tumblr. <3

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(Source where I found it, not sure if original to that person)

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May the Four Forces Be With You!

May the force be with you? Much to learn you still have, padawan. In our universe it would be more appropriate to say, “May the four forces be with you.”

There are four fundamental forces that bind our universe and its building blocks together. Two of them are easy to spot — gravity keeps your feet on the ground while electromagnetism keeps your devices running. The other two are a little harder to see directly in everyday life, but without them, our universe would look a lot different!

Let’s explore these forces in a little more detail.

Gravity: Bringing the universe together

If you jump up, gravity brings you back down to Earth. It also keeps the solar system together … and our galaxy, and our local group of galaxies and our supercluster of galaxies.

Gravity pulls everything together. Everything, from the bright centers of the universe to the planets farthest from them. In fact, you (yes, you!) even exert a gravitational force on a galaxy far, far away. A tiny gravitational force, but a force nonetheless.

Credit: NASA and the Advanced Visualization Laboratory at the National Center for Supercomputing and B. O'Shea, M. Norman

Despite its well-known reputation, gravity is actually the weakest of the four forces. Its strength increases with the mass of the two objects involved. And its range is infinite, but the strength drops off as the square of the distance. If you and a friend measured your gravitational tug on each other and then doubled the distance between you, your new gravitational attraction would just be a quarter of what it was. So, you have to be really close together, or really big, or both, to exert a lot of gravity.

Even so, because its range is infinite, gravity is responsible for the formation of the largest structures in our universe! Planetary systems, galaxies and clusters of galaxies all formed because gravity brought them together.

Gravity truly surrounds us and binds us together.

Electromagnetism: Lighting the way

You know that shock you get on a dry day after shuffling across the carpet? The electricity that powers your television? The light that illuminates your room on a dark night? Those are all the work of electromagnetism. As the name implies, electromagnetism is the force that includes both electricity and magnetism.

Electromagnetism keeps electrons orbiting the nucleus at the center of atoms and allows chemical compounds to form (you know, the stuff that makes up us and everything around us). Electromagnetic waves are also known as light. Once started, an electromagnetic wave will travel at the speed of light until it interacts with something (like your eye) — so it will be there to light up the dark places.

Like gravity, electromagnetism works at infinite distances. And, also like gravity, the electromagnetic force between two objects falls as the square of their distance. However, unlike gravity, electromagnetism doesn’t just attract. Whether it attracts or repels depends on the electric charge of the objects involved. Two negative charges or two positive charges repel each other; one of each, and they attract each other. Plus. Minus. A balance.

This is what happens with common household magnets. If you hold them with the same “poles” together, they resist each other. On the other hand, if you hold a magnet with opposite poles together — snap! — they’ll attract each other.

Electromagnetism might just explain the relationship between a certain scruffy-looking nerf-herder and a princess.

Strong Force: Building the building blocks

Credit: Lawrence Livermore National Laboratory

The strong force is where things get really small. So small, that you can’t see it at work directly. But don’t let your eyes deceive you. Despite acting only on short distances, the strong force holds together the building blocks of the atoms, which are, in turn, the building blocks of everything we see around us.

Like gravity, the strong force always attracts, but that’s really where their similarities end. As the name implies, the force is strong with the strong force. It is the strongest of the four forces. It brings together protons and neutrons to form the nucleus of atoms — it has to be stronger than electromagnetism to do it, since all those protons are positively charged. But not only that, the strong force holds together the quarks — even tinier particles — to form those very protons and neutrons.

However, the strong force only works on very, very, very small distances. How small? About the scale of a medium-sized atom’s nucleus. For those of you who like the numbers, that’s about 10-15 meters, or 0.000000000000001 meters. That’s about a hundred billion times smaller than the width of a human hair! Whew.

Its tiny scale is why you don’t directly see the strong force in your day-to-day life. Judge a force by its physical size, do you? 

Weak Force: Keeping us in sunshine

If you thought it was hard to see the strong force, the weak force works on even smaller scales — 1,000 times smaller. But it, too, is extremely important for life as we know it. In fact, the weak force plays a key role in keeping our Sun shining.

But what does the weak force do? Well … that requires getting a little into the weeds of particle physics. Here goes nothing! We mentioned quarks earlier — these are tiny particles that, among other things, make up protons and neutrons. There are six types of quarks, but the two that make up protons and neutrons are called up and down quarks. The weak force changes one quark type into another. This causes neutrons to decay into protons (or the other way around) while releasing electrons and ghostly particles called neutrinos.

So for example, the weak force can turn a down quark in a neutron into an up quark, which will turn that neutron into a proton. If that neutron is in an atom’s nucleus, the electric charge of the nucleus changes. That tiny change turns the atom into a different element! Such reactions are happening all the time in our Sun, giving it the energy to shine.

The weak force might just help to keep you in the (sun)light.

All four of these forces run strong in the universe. They flow between all things and keep our universe in balance. Without them, we’d be doomed. But these forces will be with you. Always.

You can learn more about gravity from NASA’s Space Place and follow NASAUniverse on Twitter or Facebook to learn about some of the cool cosmic objects we study with light.

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

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Reblogging for those who missed it!

(If you can’t tell... I get a little excited about redditgift exchanges!)

I signed up and you should too!! The hardest part was deciding which one to sign up for!! 

Which one did you guys sign up for?

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1986 Chernobyl radioactive cloud over Europe.

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Sears harmony house wallpaper and wall oilcloth, 1955.

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Electronic Industries Association resolution chart, 1956.

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Duncan & Miller Glass, 1943.

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Design for a Villa, Vienna 1905. Arch. Michler and Mahler.

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I CANNOT WAIT!!

Get Ready To Launch America!

A new era of human spaceflight is about to begin. American astronauts will once again launch on an American rocket from American soil to the International Space Station as part of our Commercial Crew Program! NASA astronauts Bob Behnken and Doug Hurley will fly on SpaceX’s Crew Dragon spacecraft, lifting off on a Falcon 9 rocket at 4:32 p.m. EDT May 27, from Kennedy Space Center in Florida, for an extended stay at the space station for the Demo-2 mission. 

As the final flight test for SpaceX, this mission will validate the company’s crew transportation system, including the launch pad, rocket, spacecraft and operational capabilities. This also will be the first time NASA astronauts will test the spacecraft systems in orbit.

Behnken and Hurley were among the first astronauts to begin working and training on SpaceX’s next-generation human space vehicle and were selected for their extensive test pilot and flight experience, including several missions on the space shuttle.

Behnken will be the joint operations commander for the mission, responsible for activities such as rendezvous, docking and undocking, as well as Demo-2 activities while the spacecraft is docked to the space station.

Hurley will be the spacecraft commander for Demo-2, responsible for activities such as launch, landing and recovery.

Lifting off from Launch Pad 39A atop a specially instrumented Falcon 9 rocket, Crew Dragon will accelerate its two passengers to approximately 17,000 mph and put it on an intercept course with the International Space Station. In about 24 hours, Crew Dragon will be in position to rendezvous and dock with the space station. The spacecraft is designed to do this autonomously but astronauts aboard the spacecraft and the station will be diligently monitoring approach and docking and can take control of the spacecraft if necessary.

The Demo-2 mission will be the final major step before our Commercial Crew Program certifies Crew Dragon for operational, long-duration missions to the space station. This certification and regular operation of Crew Dragon will enable NASA to continue the important research and technology investigations taking place onboard the station, which benefits people on Earth and lays the groundwork for future exploration of the Moon and Mars starting with the agency’s Artemis program, which will land the first woman and the next man on the lunar surface in 2024. 

Get excited and follow along on social media using the hashtag #LaunchAmerica! 

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

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Luminescent Zip-Tie Formations Are Shaped into Futuristic Organic Life by Artist Elisabeth Picard

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Gourds Grown in Vessel-Shaped Molds Become Reusable Cups and Flasks

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How to Make a Motherboard Cake

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Because this seems relevant now more than ever...