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Coronavirus aftermath

After living the nightmare of the coronavirus, humanity woke up, literally woke up. The world has suffered, people lost their loved ones, economies went down. Perhaps the virus wasn’t that lethal, yet the way it developed, and the speed of its spreading made humans, or at least this generation, realize that this is the worst calamity it has been up against. In most countries, people started to think, to move, well actually to stay at home. They enforced quarantine on themselves without being asked by the government. They started propaganda on social media trying to fill the gap between literate and illiterate people, thus it was the only platform that all of them shared. A lot of countries stood hand in hand, and a cure was developed in less than a month. It was epic, another triumph of humans against abnormal creatures. The cure was quickly tested and gave excellent results. it was given freely to all affected countries, and most of the cases were stabilized. Now it was the time to celebrate, pray to God and add the vaccine to the list of vaccine newborns will take. But hey, wait a second, was it all over? No, this virus came here as a lesson. Or actually each calamity hit us to remind us of who we truly are, to get us back on track, because sometimes we stray. Well, actually, humans don’t develop, don’t learn from their mistakes. Maybe our science and our technologies are developing, but we are not. We do mistakes, we learn from them, but the next generation don’t, and repeat the same mistakes or even do worse. Well, at least this generation understood that it’s time to wake up. They understood through this virus the priorities they should focus on. They understood that things are unbalanced. All stars, football players, social media influencers, getting paid millions, did nothing, hiding behind a wealth created by common people. While doctors and scientists risked their lives for small payoffs. All huge amounts lost on sports events, movie festivals, concerts should have been useful to build hospitals and medical centers. Their minds started to rebel against their normal thinking, and they started to see the truth. Quickly, the thoughts become actions.

By the end of the year 2020, a new politic submerged, more budgets on the security and the well being of people, and less on entertainment. Maybe it’s time to give each thing its proper value. People now are weighted, once again, by their intellectual abilities. More schools have been built, and more scholarships for students. More scientists and researchers have been awarded. And more science fairs have been held. All companies sponsored research and development now, instead of sponsoring football matches. Of course, there are still sports and events, but not as big as they were. Humans always focus on entertainment at times of peace and forget about their time at war. But this generation was special, they understood that they are always at war and that the enemy is always lurking by, and can hide, in the fried bat you eat at dinner.

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Song of the Day: The Middle by Jimmy Eat World

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so last night when i was trying to sleep y’know it was dark and quiet and my eyes were closed but then i suddenly started laughing because i remembered this gif

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50 years ago, three Apollo astronauts rode this 363 foot tall rocket, the Saturn V, embarking on one of the greatest missions of mankind – to step foot on another world. On July 20, 1969, astronauts Buzz Aldrin, Michael Collins and Neil Armstrong made history when they arrived at the Moon. Thanks to the Saturn V rocket, we were able to complete this epic feat, returning to the lunar surface a total of six times. The six missions that landed on the Moon returned a wealth of scientific data and almost 400 kilograms of lunar samples.

In honor of this historic launch, the National Air and Space Museum is projecting the identical rocket that took our astronauts to the Moon on the Washington Monument in Washington, D.C.

This week, you can watch us salute our Apollo 50th heroes and look forward to our next giant leap for future missions to the Moon and Mars. Tune in to a special two-hour live NASA Television broadcast at 1 p.m. ET on Friday, July 19. Watch the program at www.nasa.gov/live.

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

wonders-of-the-cosmos

Solar System Textures (Moon’s)

Europa (moon of Jupiter)

Callisto (Moon of Jupiter)

Ganymede (moon of Jupiter)

Io (moon of Jupiter)

Rhea (moon of Saturn)

Enceladus (moon of Saturn)

Dione (moon of Saturn)

Iapetus (moon of Saturn)

Tethys (moon of Saturn)

Triton (moon of Neptune)

am i a bad person ?

i gave away my 4months old cat, im moving out to a place where animals are forbidden, so my dad took him to someone he knows hes gonna take care of him, i didnt even get to say my last goodbye as they go out when i was sleeping.

not even a day after and,i already miss him.

i feel bad for giving him away, im imagining him getting scared by all the new people and the area.

i cant stop think about it, its haunting me.

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This adorable proposal.

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This is why I LOVE same-sex relationships. Like, who’s gonna propose?? Probably both!!

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Saturn, rings and moons (Tethys, Enceladus, Titan and Janus, Prometheus, Atlas, Iapetus, Atlas, Methone and Titan).

image credit: NASA/JPL (processed by Elisabetta Bonora & Marco Faccin, Kevin Gill).

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1111 multiplied by 1111 being 1234321 is the mathematical equivalent of white light dispersing through a prism to make a rainbow.

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When Dead Stars Collide!

Gravity has been making waves - literally. Earlier this month, the Nobel Prize in Physics was awarded for the first direct detection of gravitational waves two years ago. But astronomers just announced another huge advance in the field of gravitational waves - for the first time, we’ve observed light and gravitational waves from the same source.

There was a pair of orbiting neutron stars in a galaxy (called NGC 4993). Neutron stars are the crushed leftover cores of massive stars (stars more than 8 times the mass of our sun) that long ago exploded as supernovas. There are many such pairs of binaries in this galaxy, and in all the galaxies we can see, but something special was about to happen to this particular pair.

Each time these neutron stars orbited, they would lose a teeny bit of gravitational energy to gravitational waves. Gravitational waves are disturbances in space-time - the very fabric of the universe - that travel at the speed of light. The waves are emitted by any mass that is changing speed or direction, like this pair of orbiting neutron stars. However, the gravitational waves are very faint unless the neutron stars are very close and orbiting around each other very fast.

As luck would have it, the teeny energy loss caused the two neutron stars to get a teeny bit closer to each other and orbit a teeny bit faster. After hundreds of millions of years, all those teeny bits added up, and the neutron stars were *very* close. So close that … BOOM! … they collided. And we witnessed it on Earth on August 17, 2017.

Credit: National Science Foundation/LIGO/Sonoma State University/A. Simonnet

A couple of very cool things happened in that collision - and we expect they happen in all such neutron star collisions. Just before the neutron stars collided, the gravitational waves were strong enough and at just the right frequency that the National Science Foundation (NSF)’s Laser Interferometer Gravitational-Wave Observatory (LIGO) and European Gravitational Observatory’s Virgo could detect them. Just after the collision, those waves quickly faded out because there are no longer two things orbiting around each other!

LIGO is a ground-based detector waiting for gravitational waves to pass through its facilities on Earth. When it is active, it can detect them from almost anywhere in space.

The other thing that happened was what we call a gamma-ray burst. When they get very close, the neutron stars break apart and create a spectacular, but short, explosion. For a couple of seconds, our Fermi Gamma-ray Telescope saw gamma-rays from that explosion. Fermi’s Gamma-ray Burst Monitor is one of our eyes on the sky, looking out for such bursts of gamma-rays that scientists want to catch as soon as they’re happening.

And those gamma-rays came just 1.7 seconds after the gravitational wave signal. The galaxy this occurred in is 130 million light-years away, so the light and gravitational waves were traveling for 130 million years before we detected them.

After that initial burst of gamma-rays, the debris from the explosion continued to glow, fading as it expanded outward. Our Swift, Hubble, Chandra and Spitzer telescopes, along with a number of ground-based observers, were poised to look at this afterglow from the explosion in ultraviolet, optical, X-ray and infrared light. Such coordination between satellites is something that we’ve been doing with our international partners for decades, so we catch events like this one as quickly as possible and in as many wavelengths as possible.

Astronomers have thought that neutron star mergers were the cause of one type of gamma-ray burst - a short gamma-ray burst, like the one they observed on August 17. It wasn’t until we could combine the data from our satellites with the information from LIGO/Virgo that we could confirm this directly.

This event begins a new chapter in astronomy. For centuries, light was the only way we could learn about our universe. Now, we’ve opened up a whole new window into the study of neutron stars and black holes. This means we can see things we could not detect before.

The first LIGO detection was of a pair of merging black holes. Mergers like that may be happening as often as once a month across the universe, but they do not produce much light because there’s little to nothing left around the black hole to emit light. In that case, gravitational waves were the only way to detect the merger.

Image Credit: LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet)

The neutron star merger, though, has plenty of material to emit light. By combining different kinds of light with gravitational waves, we are learning how matter behaves in the most extreme environments. We are learning more about how the gravitational wave information fits with what we already know from light - and in the process we’re solving some long-standing mysteries!

Want to know more? Get more information HERE.

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

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binary is as simple as 1, 10, 11

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Solar System: Things to Know This Week

See history in the making on September 22! That’s the day OSIRIS-REx, the first U.S. mission to carry samples from an asteroid back to Earth, will make a close approach to Earth as it uses our planet’s gravity to slingshot itself toward the asteroid Bennu.

Over the course of several days, observatories and amateur astronomers will be able to spot the spacecraft. Below, 10 things to know about this incredible mission that will bring us the largest sample returned from space since the Apollo era.

1. Big Deal

OSIRIS-REx seeks answers to the questions that are central to the human experience: Where did we come from? What is our destiny? Asteroids, the leftover debris from the solar system formation process, can help us answer these questions and teach us about the history of the Sun and planets.

2. That’s a Long Acronym

Yup. OSIRIS-REx stands for the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer spacecraft. The gist: It will rendezvous with, study, and return a sample of the asteroid Bennu to Earth.

3. Lots of Instruments, Too

While all the acronyms for each instrument may be alphabet soup, each has a job/role to perform in order to complete the mission. Explore what each one will do in this interactive webpage.

4. Nice to Meet You, Bennu

Scientists chose Bennu as the mission target because of its composition, size, and proximity to Earth. Bennu is a rare B-type asteroid (primitive and carbon-rich), which is expected to have organic compounds and water-bearing minerals like clays.

5. Hard Knock Life

Bennu had a tough life in a rough neighborhood: the early solar system. It’s an asteroid the size of a small mountain born from the rubble of a violent collision, hurled through space for millions of years and dismembered by the gravity of planets—but that’s exactly what makes it a fascinating destination.

6. High Fives All Around

In 2018, OSIRIS-REx will approach Bennu and begin an intricate dance with the asteroid, mapping and studying Bennu in preparation for sample collection. In July 2020, the spacecraft will perform a daring maneuver in which its 11-foot arm will reach out for a five-second “high-five” to stir up surface material, collecting at least 2 ounces (60 grams) of small rocks and dust into a sample return capsule.

7. Home Sweet Home

OSIRIS-REx launched on September 8, 2016 from Cape Canaveral, Florida on an Atlas V rocket. In March 2021, the window for departure from the asteroid will open and OSIRIS-REx will begin its return journey to Earth, arriving two-and-a-half years later in September 2023.

8. Precious Cargo

The sample will head to Earth inside of a return capsule with a heat shield and parachutes that will separate from the spacecraft once it enters the Earth’s atmosphere. The capsule containing the sample will be collected at the Utah Test and Training Range. Once it arrives, it will be transported to NASA’s Johnson Space Center in Houston for examination. For two years after the sample return (from late 2023-2025) the science team will catalog the sample and conduct the analysis needed to meet the mission science goals. NASA will preserve at least 75% of the sample at NASA’s Johnson Space Flight Center in Houston for further research by scientists worldwide, including future generations of scientists.

9. Knowledge Is Power

Analyzing the sample will help scientists understand the early solar system, as well as the hazards and resources of near-Earth space. Asteroids are remnants of the building blocks that formed the planets and enabled life. Those like Bennu contain natural resources such as water, organics and metals. Future space exploration and economic development may rely on asteroids for these materials.

10. Hitch a Ride

Journey with OSIRIS-REx as it launches, cruises, and arrives to Bennu in this interactive timeline.

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

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Five Famous Pulsars from the Past 50 Years

Early astronomers faced an obstacle: their technology. These great minds only had access to telescopes that revealed celestial bodies shining in visible light. Later, with the development of new detectors, scientists opened their eyes to other types of light like radio waves and X-rays. They realized cosmic objects look very different when viewed in these additional wavelengths. Pulsars — rapidly spinning stellar corpses that appear to pulse at us — are a perfect example.

The first pulsar was observed 50 years ago on August 6, 1967, using radio waves, but since then we have studied them in nearly all wavelengths of light, including X-rays and gamma rays.

Typical Pulsar

Most pulsars form when a star — between 8 and 20 times the mass of our sun — runs out of fuel and its core collapses into a super dense and compact object: a neutron star.

These neutron stars are about the size of a city and can rotate slowly or quite quickly, spinning anywhere from once every few hours to hundreds of times per second. As they whirl, they emit beams of light that appear to blink at us from space.

First Pulsar

One day five decades ago, a graduate student at the University of Cambridge, England, named Jocelyn Bell was poring over the data from her radio telescope - 120 meters of paper recordings.

Image Credit: Sumit Sijher

She noticed some unusual markings, which she called “scruff,” indicating a mysterious object (simulated above) that flashed without fail every 1.33730 seconds. This was the very first pulsar discovered, known today as PSR B1919+21.

Best Known Pulsar

Before long, we realized pulsars were far more complicated than first meets the eye — they produce many kinds of light, not only radio waves. Take our galaxy’s Crab Nebula, just 6,500 light years away and somewhat of a local celebrity. It formed after a supernova explosion, which crushed the parent star’s core into a neutron star.

The resulting pulsar, nestled inside the nebula that resulted from the supernova explosion, is among the most well-studied objects in our cosmos. It’s pictured above in X-ray light, but it shines across almost the entire electromagnetic spectrum, from radio waves to gamma rays.

Brightest Gamma-ray Pulsar

Speaking of gamma rays, in 2015 our Fermi Gamma-ray Space Telescope discovered the first pulsar beyond our own galaxy capable of producing such high-energy emissions.

Located in the Tarantula Nebula 163,000 light-years away, PSR J0540-6919 gleams nearly 20 times brighter in gamma-rays than the pulsar embedded in the Crab Nebula.

Dual Personality Pulsar

No two pulsars are exactly alike, and in 2013 an especially fast-spinning one had an identity crisis. A fleet of orbiting X-ray telescopes, including our Swift and Chandra observatories, caught IGR J18245-2452 as it alternated between generating X-rays and radio waves.

Scientists suspect these radical changes could be due to the rise and fall of gas streaming onto the pulsar from its companion star.

Transformer Pulsar

This just goes to show that pulsars are easily influenced by their surroundings. That same year, our Fermi Gamma Ray Space Telescope uncovered another pulsar, PSR J1023+0038, in the act of a major transformation — also under the influence of its nearby companion star.

The radio beacon disappeared and the pulsar brightened fivefold in gamma rays, as if someone had flipped a switch to increase the energy of the system.

NICER Mission

Our Neutron star Interior Composition Explorer (NICER) mission, launched this past June, will study pulsars like those above using X-ray measurements.