“Força Eletrostática é Aquela Que Governa O Movimento Dos átomos. É A Força Que Os Faz Colidir

As imagens de Júpiter deixa-nos atordoado.

The cloudscape of Jupiter, observed by NASA’s Voyager 1 probe on February 3, 1979.

(Planetary Society)

Orion e a explosão de uma estrela.

ALMA views a stellar explosion in Orion

Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new ALMA observations of the Orion Nebula complex provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images of the remains of a 500-year-old explosion as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.

The colours in the ALMA data represent the relative Doppler shifting of the millimetre-wavelength light emitted by carbon monoxide gas. The blue colour in the ALMA data represents gas approaching at the highest speeds; the red colour is from gas moving toward us more slowly.

The background image includes optical and near-infrared imaging from both the Gemini South and ESO Very Large Telescope. The famous Trapezium Cluster of hot young stars appears towards the bottom of this image. The ALMA data do not cover the full image shown here.

Credit: ALMA (ESO/NAOJ/NRAO), J. Bally/H. Drass et al.

Assustador!!

How Do Hurricanes Form?

Hurricanes are the most violent storms on Earth. People call these storms by other names, such as typhoons or cyclones, depending on where they occur.

The scientific term for ALL of these storms is tropical cyclone. Only tropical cyclones that form over the Atlantic Ocean or eastern and central Pacific Ocean are called “hurricanes.”

Whatever they are called, tropical cyclones all form the same way.

Tropical cyclones are like giant engines that use warm, moist air as fuel. That is why they form only over warm ocean waters near the equator. This warm, moist air rises and condenses to form clouds and storms.

As this warmer, moister air rises, there’s less air left near the Earth’s surface. Essentially, as this warm air rises, this causes an area of lower air pressure below.

This starts the ‘engine’ of the storm. To fill in the low pressure area, air from surrounding areas with higher air pressure pushes in. That “new” air near the Earth’s surface also gets heated by the warm ocean water so it also gets warmer and moister and then it rises.

As the warm air continues to rise, the surrounding air swirls in to take its place. The whole system of clouds and wind spins and grows, fed by the ocean’s heat and water evaporating from the surface.

As the storm system rotates faster and faster, an eye forms in the center. It is vey calm and clear in the eye, with very low air pressure.

Tropical cyclones usually weaken when they hit land, because they are no longer being “fed” by the energy from the warm ocean waters. However, when they move inland, they can drop many inches of rain causing flooding as well as wind damage before they die out completely. 

There are five types, or categories, of hurricanes. The scale of categories is called the Saffir-Simpson Hurricane Scale and they are based on wind speed.

How Does NASA Study Hurricanes?

Our satellites gather information from space that are made into pictures. Some satellite instruments measure cloud and ocean temperatures. Others measure the height of clouds and how fast rain is falling. Still others measure the speed and direction of winds.

We also fly airplanes into and above hurricanes. The instruments aboard planes gather details about the storm. Some parts are too dangerous for people to fly into. To study these parts, we use airplanes that operate without people. 

To learn more about how we study hurricanes, visit: https://www.nasa.gov/mission_pages/hurricanes/main/index.html

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

2017

Palavras entre nós Não tenho dinheiro Mas tenho você E eu tenho você Tenho tudo.

A salty situation.

Zooplankton may be the smallest species in the freshwater food chain, but they play a big role in preserving our lakes, streams and wetlands. That’s one of the reasons why IBM  joined forces with the Rensselaer Polytechnic Institute and The FUND for Lake George to create the Jefferson Project at Lake George to understand and protect freshwater ecosystems. Recently they studied the effects road salt has on a species of zooplankton. Road salt usage has increased 50-fold since 1940, and bodies of freshwater are increasing in salinity because of it. Using IBM technology, the researchers monitored zooplankton in varying levels of salinity and found that the organisms were capable of evolving a higher tolerance to the salt. This is good news for the ecosystem since the loss of plankton could have cascading effects throughout the food chain. See, small can be mighty too.

Explore the study’s results  →

Primeira flor de Pêssego Ao vento frio de final de março Um desassossego Na alma O começo.

“Pauta do Congresso agora é vingança contra MP e Judiciário”, diz procurador - O Antagonista

Onde as árvores falam.

清水寺ーSEISUIJI * 佐渡にあるお寺 誰もいなくて冷んやりしてて でもすごく懐かしい場所だった