Latest Posts by glaretum - Page 7

Desde el sur de Francia

Crédito: Ghislain Favé

Instagram.com/ghislain_fave

This is the Eta Carinae Nebula! ♥✨🔥

The Eta Carinae nebula is one of the largest diffuse nebulae in our night sky, being almost 4 times larger than the Orion Nebula. The picture above only is a small part of the Eta Carinae Nebula - this section is called the Keyhole Nebula and it has a lot of dark gas and its shape has changed drastically due to nearby ionizing radiation! 🔑✨🔑✨🔑✨

Taken by me (Michelle Park) using the Slooh Chile One telescope on December 7th, 2020 at 7:23 UTC.

A Total Solar Eclipse Over South America

On Dec. 14, 2020, a total solar eclipse will pass over Chile and Argentina.

Solar eclipses happen when the Moon lines up just right between the Sun and Earth, allowing it to cast its shadow on Earth’s surface. People within the outer part of the Moon’s shadow will see the Sun partially blocked by the Moon, and those in the inner part of the shadow will see a total solar eclipse.

The Moon’s orbit around Earth is slightly tilted, meaning this alignment doesn’t happen on every orbit. Total solar eclipses happen somewhere on Earth about once every 18 months.

During a total solar eclipse, the Moon blocks out the Sun’s bright face, revealing its comparatively faint outer atmosphere, the corona. This provides Sun-watchers and scientists alike with a rare chance to see the solar corona closer to the Sun’s surface than is usually possible.

Scientists can take advantage of this unparalleled view — and solar eclipses’ unique effects on Earth’s atmosphere — to perform unique scientific studies on the Sun and its effects on Earth. Several NASA-funded science teams performed such studies during the total solar eclipse in the United States on Aug. 21, 2017. Read about what they’ve learned so far.

Watching the eclipse

We’ll be carrying images of December’s eclipse — courtesy of Pontificia Universidad Católica de Chile — on NASA TV and on the agency’s website starting at 9:40 a.m. EST on Dec. 14.

We’ll also have a live show in Spanish from 10:30 – 11:30 a.m. EST featuring views of the eclipse and NASA scientists.

If you’re observing the eclipse in person, remember that it’s never safe to look directly at the uneclipsed or partially eclipsed Sun. You can use special solar viewing glasses (NOT sunglasses) or an indirect method like pinhole projection to watch the eclipse in person.

For people 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 sunlight shining 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.

Mira el eclipse en vivo comentado por científicas de la NASA de 10:30 a 11:30 a.m. EST el 14 de diciembre en NASA TV y la página web de la agencia. Lee más sobre el eclipse y cómo observarlo de forma segura aquí: https://ciencia.nasa.gov/eclipse-de-2020-en-america-del-sur Y sigue a NASA en español en Instagram, Twitter, YouTube y Facebook.

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

Vía láctea sobre el Uluru, Australia

Crédito: Stefan Liebermann

Stefan Liebermann Photography

www.stefanliebermann.de

Cometa Neowise

🗓️ Octubre 2020

📸 Tomasz Arciszewski

@arciszz

~Félicette

Dreaming of going to space? – Astronaut Victor Glover has you covered. 

In his first video from space, take a look at our home through the window of SpaceX’s Crew Dragon “Resilience” spacecraft. Victor arrived to the International Space Station alongside his fellow Crew-1 astronauts on Nov. 16, 2020. 

This is his first trip to space and his first mission on the orbital lab! 

Follow his Instagram account HERE to stay up-to-date on station life and for more behind-the-scenes content like this. 

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

Región activa solar AR2786 (Izquierda) y AR2785 (Derecha) en comparativa con nuestro planeta.

Crédito: Paul's Astrophotography

Recordando al cometa NEOWISE.

Crédito: Julio C. Lozoya

El 22 de Febrero se publicó esta imagen por la Agencia de Exploración Aeroespacial de Japón (JAXA) donde se muestra la sombra en el centro, de la nave espacial Hayabusa2 después de su aterrizaje exitoso en el asteroide Ryugu. La nave espacial japonesa se está acercando a la Tierra después de un viaje de un año a casa desde un asteroide distante que lleva muestras de suelo y datos que podrían proporcionar pistas sobre los orígenes del sistema solar, dijo un funcionario de la agencia espacial el viernes 27 de noviembre de 2020.

Fuente: JAXA vía AP

Vía Láctea y el desierto.

Crédito: Julio C. Lozoya

Check out tiny-house-looking satellite Sentinel-6 Michael Freilich

It might look like something you’d find on Earth, but this piece of technology has a serious job to do: track global sea level rise with unprecedented accuracy. It’s #SeeingTheSeas mission will:

Provide information that will help researchers understand how climate change is reshaping Earth’s coastlines – and how fast this is happenin.

Help researchers better understand how Earth’s climate is changing by expanding the global atmospheric temperature data record

Help to improve weather forecasts by providing meteorologists information on atmospheric temperature and humidity.

Tune in tomorrow, Nov. 21 at 11:45 a.m. EST to watch this U.S.-European satellite launch to space! Liftoff is targeted for 12:17 p.m. EST. Watch HERE. 

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

Vía Láctea desde Jutland, Dinamarca

Crédito: Ruslan Merzlyakov

RMS photography

Instagram.com/astrorms

Autumn Vibes ღ

Santuario Alto Huemul, San Fernando, El Maule, Chile.

La mayoría de los cúmulos de estrellas son singularmente impresionantes. Pero los cúmulos abiertos NGC 869 y NGC 884 podrían considerarse doblemente impresionantes. Puede ser visto desde un lugar oscuro sin siquiera binoculares.

Crédito: Greg Polanski.

El núcleo de la Vía Láctea se eleva sobre la Puerta de Durdle con Saturno y Júpiter.

Crédito: Ant Sullivan Photography

Instagram.com/antsullivan_photography

www.antsullivanphotography.com

Luna

Crédito: Dominique Joubert Timelapse

www.nightscape-timelapse.com

Setting the Standards for Unmanned Aircraft

From advanced wing designs, through the hypersonic frontier, and onward into the era of composite structures, electronic flight controls, and energy efficient flight, our engineers and researchers have led the way in virtually every aeronautic development. And since 2011, aeronautical innovators from around the country have been working on our Unmanned Aircraft Systems integration in the National Airspace System, or UAS in the NAS, project.  

This project was a new type of undertaking that worked to identify, develop, and test the technologies and procedures that will make it possible for unmanned aircraft systems to have routine access to airspace occupied by human piloted aircraft. Since the start, the goal of this unified team was to provide vital research findings through simulations and flight tests to support the development and validation of detect and avoid and command and control technologies necessary for integrating UAS into the NAS.  

That interest moved into full-scale testing and evaluation to determine how to best integrate unmanned vehicles into the national airspace and how to come up with standards moving forward. Normally, 44,000 flights safely take off and land here in the U.S., totaling more than 16 million flights per year. With the inclusion of millions of new types of unmanned aircraft, this integration needs to be seamless in order to keep the flying public safe.

Working hand-in-hand, teams collaborated to better understand how these UAS’s would travel in the national airspace by using NASA-developed software in combination with flight tests. Much of this work is centered squarely on technology called detect and avoid.  One of the primary safety concerns with these new systems is the inability of remote operators to see and avoid other aircraft.  Because unmanned aircraft literally do not have a pilot on board, we have developed concepts allowing safe operation within the national airspace.  

In order to better understand how all the systems work together, our team flew a series of tests to gather data to inform the development of minimum operational performance standards for detect and avoid alerting guidance. Over the course of this testing, we gathered an enormous amount of data allowing safe integration for unmanned aircraft into the national airspace. As unmanned aircraft are becoming more ubiquitous in our world - safety, reliability, and proven research must coexist.

Every day new use case scenarios and research opportunities arise based around the hard work accomplished by this incredible workforce. Only time will tell how these new technologies and innovations will shape our world.

Want to learn the many ways that NASA is with you when you fly? Visit nasa.gov/aeronautics.



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

Cohete Atlas V con el NROL-101

Crédito: ULA

Auroras desde Kiruna, Suecia.

Crédito: Mia Stålnacke

@AngryTheInch

5 Out of this World Experiments Awaiting Crew-1 Space Scientists

NASA astronauts Shannon Walker, Victor Glover, and Mike Hopkins, and JAXA (Japan Aerospace Exploration Agency) astronaut Soichi Noguchi embark on a historic mission on November 14, 2020 aboard the Crew Dragon. NASA’s Crew-1 mission marks the first certified crew rotation flight to the International Space Station. During their 6-month stay on orbit, these crew members will don their science caps and complete experiments in microgravity.  Check out five out of this world experiments you can expect to see these space scientists working on during Expedition 64.

1. Space Gardening

The Crew-1 astronauts will become space farmers with the responsibility of tending to the rad(ish) garden located in a facility known as the Advanced Plant Habitat (APH). Researchers are investigating radishes in the Plant Habitat-02 experiment as a candidate crop for spaceflight applications to supplement food sources for astronauts. Radishes have the benefits of high nutritional content and quick growth rates, making these veggies an intriguing option for future space farmers on longer missions to the Moon or Mars.

2. Micro Miners

Microbes can seemingly do it all, including digging up the dirt (so to speak).  The BioAsteroid investigation looks at the ability of bacteria to break down rock.  Future space explorers could use this process for extracting elements from planetary surfaces and refining regolith, the type of soil found on the moon, into usable compounds.  To sum it up, these microbial miners rock.

3. Cooler Exploration Spacesuits

The iconic spacesuits used to walk on the moon and perform spacewalks on orbit are getting an upgrade. The next generation spacesuit, the Exploration Extravehicular Mobility Unit (xEMU), will be even cooler than before, both in looks and in terms of ability to regulate astronaut body temperature.  The Spacesuit Evaporation Rejection Flight Experiment (SERFE) experiment is a technology demonstration being performed on station to look at the efficiency of multiple components in the xEMU responsible for thermal regulation, evaporation processes, and preventing corrosion of the spacesuits.

4. Chips in Space

Crew-1 can expect to get a delivery of many types of chips during their mission.  We aren’t referring to the chips you would find in your pantry.  Rather, Tissue Chips in Space is an initiative sponsored by the National Institutes of Health to study 3D organ-like constructs on a small, compact devices in microgravity. Organ on a chip technology allows for the study of disease processes and potential therapeutics in a rapid manner. During Expedition 64, investigations utilizing organ on a chip technology will include studies on muscle loss, lung function, and the blood brain barrier – all on devices the size of a USB flashdrive.

5. The Rhythm of Life

Circadian rhythm, otherwise known as our “internal clock,” dictates our sleep-wake cycles and influences cognition. Fruit flies are hitching a ride to the space station as the subjects of the Genes in Space-7 experiment, created by a team of high school students.  These flies, more formally known as the Drosophila melanogaster, are a model organism, meaning that they are common subjects of scientific study. Understanding changes in the genetic material that influences circadian rhythm in microgravity can shed light on processes relevant to an astronaut’s brain function.

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

For updates on other platforms, follow @ISS_Research, Space Station Research and Technology News, or our Facebook to keep up with the science happening aboard your orbiting laboratory, and step outside to see the space station passing over your town using Spot the Station.

Estas ilustraciones muestran tres versiones de un planeta rocoso con diferentes cantidades de calentamiento interno de elementos radiactivos. El planeta del medio es parecido a la Tierra, con placas tectónicas y una dínamo interna que genera un campo magnético. El planeta superior, con más calentamiento radiogénico, tiene un vulcanismo extremo pero no tiene dinamo ni campo magnético. El planeta inferior, con menos calentamiento radiogénico, está geológicamente "muerto", sin vulcanismo.

Crédito: Melissa Weiss

This is Caldwell 109! 🎆🎆🎆

This “phantom snowball” planetary nebula shows ornate, beautiful shapes like spirals of gas that we’ll likely see when the Sun dies as well. It was also the last picture I needed to finish my Caldwell collection - such a great way to end a remarkable astrophotography experience! 🍭🍭🍭

Taken by me (Michelle Park) using the Slooh Canary Two telescope on November 10th, 2020 at 02:22 UTC.

This is the Hyades Cluster! ✨✨✨

As the closest star cluster to Earth, this star cluster contains hundreds of stars with some of the brighter ones in this image transforming into giant stars as they enter a new phase of their lifespan. Some theorize that the creation of this cluster may have happened all at once as many of these stars are the same age and move in a similar way! 💫💫💫

Taken by me (Michelle Park) using the Slooh Canary Two telescope on November 6th, 2020 at 22:15 UTC.

Impresionante fotografia desde Kiruna, Suecia.

Crédito: Mia Stålnacke

@AngryTheInch

Sea Level Rise is on the Rise

As our planet warms, sea levels are rising around the world – and are doing so at an accelerating rate. Currently, global sea level is rising about an eighth of an inch every year.

That may seem insignificant, but it’s 30% more than when NASA launched its first satellite mission to measure ocean heights in 1992 – less than 30 years ago. And people already feel the impacts, as seemingly small increments of sea level rise become big problems along coastlines worldwide.

Higher global temperatures cause our seas to rise, but how? And why are seas rising at a faster and faster rate? There are two main reasons: melting ice and warming waters.

 The Ice We See Is Getting Pretty Thin

About two-thirds of global sea level rise comes from melting glaciers and ice sheets, the vast expanses of ice that cover Antarctica and Greenland. In Greenland, most of that ice melt is caused by warmer air temperatures that melt the upper surface of ice sheets, and when giant chunks of ice crack off of the ends of glaciers, adding to the ocean.

In Antarctica – where temperatures stay low year-round – most of the ice loss happens at the edges of glaciers. Warmer ocean water and warmer air meet at the glaciers’ edges, eating away at the floating ice sheets there.

NASA can measure these changes from space. With data from the Ice, Cloud and land Elevation Satellite-2, or ICESat-2, scientists can measure the height of ice sheets to within a fraction of an inch. Since 2006, an average of 318 gigatons of ice per year has melted from Greenland and Antarctica’s ice sheets. To get a sense of how big that is: just one gigaton is enough to cover New York City’s Central Park in ice 1,000 feet deep – almost as tall as the Chrysler Building.

With the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission – a partnership with the German Research Centre for Geosciences – scientists can calculate the mass of ice lost from these vast expanses across Greenland and Antarctica.

It’s not just glaciers in Antarctica and Greenland that are melting, though. Nearly all glaciers have been melting in the last decade, including those in Alaska, High Mountain Asia, South America, and the Canadian Arctic. Because these smaller glaciers are melting quickly, they contribute about the same amount to sea level rise as meltwater from massive ice sheets.

The Water’s Getting Warm

As seawater warms, it takes up more space. When water molecules get warmer, the atoms in those molecules vibrate faster, expanding the volume they take up. This phenomenon is called thermal expansion. It’s an incredibly tiny change in the size of a single water molecule, but added across all the water molecules in all of Earth’s oceans – a single drop contains well over a billion billion molecules – it accounts for about a third of global sea level rise.

So Much to See

While sea level is rising globally, it’s not the same across the planet. Sea levels are rising about an eighth of an inch per year on average worldwide. But some areas may see triple that rate, some may not observe any changes, and some may even experience a drop in sea level. These differences are due to ocean currents, mixing, upwelling of cold water from the deep ocean, winds, movements of heat and freshwater, and Earth’s gravitational pull moving water around. When ice melts from Greenland, for example, the drop in mass decreases the gravitational pull from the ice sheet, causing water to slosh to the shores of South America.

That’s where our view from space comes in. We’re launching Sentinel-6 Michael Freilich, an international partnership satellite, to continue our decades-long record of global sea level rise.

Cuatro noches de monitoreo continuo fueron necesarias para obtener esta increíble video de Marte el 30 de octubre desde el telescopio de 1 metro del observatorio Pic-du-Midi, Observatorio de París.

Crédito: Jean-Luc Dauvergne / François Colas / Thierry Legault

Esta imagen etérea captura un halo lunar en un raro cielo nublado sobre el Observatorio Paranal de ESO. Lo sobrenatural de esta imagen, obtenida en el Very Large Telescope (VLT) de ESO en el norte de Chile, se debe a una combinación de fenómenos de luz natural y artificial. Este fenómeno óptico se crea cuando la luz de la luna es refractada por millones de pequeños cristales de hielo y gotas de agua en la atmósfera circundante.

Estos halos son bastante comunes; sin embargo, requieren bastante luz para aparecer, por lo que la Luna debe estar en una posición específica con respecto a la Tierra y al Sol para reflejar suficiente luz para producir un anillo fino como este. Este halo particular comprende múltiples bandas de colores que se forman de la misma manera que en un arco iris: la luz de diferentes longitudes de onda se refracta en cantidades variables. La luz blanca se divide así en sus partes constituyentes, dispersándose para crear un espectro de colores visualmente distintos.

Crédito: Juan Carlos Muñoz-Mateos / ESO

Aurora Boreal desde Noruega

Crédito: Giulio Cabianchi

Instagram.com/giulio_cobianchi_photo

giuliocobianchi.com

En septiembre de 2006 como parte de la Misión STS-115, el astronauta de la CSA, Steve MacLean se convirtió en el primer canadiense en operar Canadarm2 en el espacio y el segundo canadiense en realizar una caminata espacial.

Crédito: @NASA