Category: atmosfera

Enceladus and Saturn Image credit: Gordan …

Enceladus and Saturn

Image credit: Gordan Ugarkovic

Observations of Earth, Soyuz, Aurora, moon and…

Observations of Earth, Soyuz, Aurora, moon and Space Shuttle Endeavor made from the International Space Station.

source: images.nasa.gov

Jupiter is perpetually covered with clouds com…

Jupiter is perpetually covered with clouds composed of ammonia crystals and possibly ammonium hydrosulfide. The clouds are located in the tropopause and are arranged into bands of different latitudes, known as tropical regions. These are sub-divided into lighter-hued zones and darker belts. The interactions of these conflicting circulation patterns cause storms and turbulence. Wind speeds of 100 m/s (360 km/h) are common in zonal jets. The zones have been observed to vary in width, color and intensity from year to year, but they have remained sufficiently stable for scientists to give them identifying designations.

The cloud layer is only about 50 km (31 mi) deep, and consists of at least two decks of clouds: a thick lower deck and a thin clearer region. There may also be a thin layer of water clouds underlying the ammonia layer. Supporting the idea of water clouds are the flashes of lightning detected in the atmosphere of Jupiter. These electrical discharges can be up to a thousand times as powerful as lightning on Earth. The water clouds are assumed to generate thunderstorms in the same way as terrestrial thunderstorms, driven by the heat rising from the interior.

source

This scene, captured with a 35mm camera from i…

This scene, captured with a 35mm camera from inside the Space Shuttle Endeavour, shows Jupiter rising above the airglow over Earth’s horizon. The crescent Moon is at top frame.

Credit: NASA

Citizen scientist Rick Lundh created this ab…

Citizen scientist Rick Lundh created this abstract Jovian artwork using data from the JunoCam imager on NASA’s Juno spacecraft.

Image credits: NASA/JPL-Caltech/SwRI/MSSS/Rick Lundh

Juno in Jupiter (the images that appear the ju…

Juno in Jupiter (the images that appear the juno probe is just an illustration) +Jupiter

Image credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill

Aurora Over Alaska Credit: Joshua Strang, US…

Aurora Over Alaska 

Credit: Joshua Strang, USAF, Wikipedia

Titan is primarily composed of water ice and r…

Titan is primarily composed of water ice and rocky material. Much as with Venus before the Space Age, the dense opaque atmosphere prevented understanding of Titan’s surface until new information from the Cassini–Huygens mission in 2004, including the discovery of liquid hydrocarbon lakes in Titan’s polar regions. The geologically young surface is generally smooth, with few impact craters, although mountains and several possible cryovolcanoes have been found. 

The atmosphere of Titan is largely nitrogen; minor components lead to the formation of methane and ethane clouds and nitrogen-rich organic smog. The climate—including wind and rain—creates surface features similar to those of Earth, such as dunes, rivers, lakes, seas (probably of liquid methane and ethane), and deltas, and is dominated by seasonal weather patterns as on Earth. With its liquids (both surface and subsurface) and robust nitrogen atmosphere, Titan’s methane cycle is analogous to Earth’s water cycle, at the much lower temperature of about 94 K (−179.2 °C).

Image credit: NASA/JPL/Kevin Gill

Images taken by the International Space Statio…

Images taken by the International Space Station (ISS)

credit: NASA (Expedition ISS)

This false-color composite was created with …

This false-color composite was created with images taken during the Cassini spacecraft’s closest flyby of Titan on April 16, 2005.

Credit: NASA/JPL