Showing posts with label seen. Show all posts
Showing posts with label seen. Show all posts

Wednesday, 27 September 2017

South Africa seen from the International Space Station

South Africa seen from the International Space Station

South Africa seen from the International Space Station

This photo was taken from the International Space Station on May 9, 2013, looking across the southwestern tip of the country. The image focuses on the mountainous Western Cape, dominated by the Great Escarpment, a 5,000-kilometer long mountain chain that marks the edge of the African plateau. The Cape of Good Hope hooks out from the mainland, with the city of Cape Town coloring the top in cement gray. To the east is Cape Agulhas, the southernmost point of the African continent where the Indian Ocean meets the Atlantic Ocean.

Image Credit: NASA/ESA
Explanation from: https://earthobservatory.nasa.gov/IOTD/view.php?id=82601

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Sunday, 24 September 2017

Jupiter seen by Juno spacecraft in Near Infrared

Jupiter seen by Juno spacecraft in Near Infrared

Jupiter seen by Juno spacecraft in Near Infrared

This composite infrared image of Jupiter reveals haze particles over a range of altitudes, as seen in reflected sunlight. It was taken using the Gemini North Telescopes Near-InfraRed Imager (NIRI) on May 18, 2017, in collaboration with the investigation of Jupiter by NASAs Juno mission. Juno completed its sixth close approach to Jupiter a few hours after this observation.

The multiple filters corresponding to each color used in the image cover wavelengths between 1.69 microns and 2.275 microns. Jupiters Great Red Spot (GRS) appears as the brightest (white) region at these wavelengths, which are primarily sensitive to high-altitude clouds and hazes near and above the top of Jupiters convective region.

The GRS is one of the highest-altitude features in Jupiters atmosphere. Narrow spiral streaks that appear to lead into it or out of it from surrounding regions probably represent atmospheric features being stretched by the intense winds within the GRS, such as the hook-like structure on its western edge (left side). Some are being swept off its eastern edge (right side) and into an extensive wave-like flow pattern, and there is even a trace of flow from its northern edge.

Other features near the GRS include the dark block and dark oval to the south and the north of the eastern flow pattern, respectively, indicating a lower density of cloud and haze particles in those locations. Both are long-lived cyclonic circulations, rotating clockwise -- in the opposite direction as the counterclockwise rotation of the GRS.

A prominent wave pattern is evident north of the equator, along with two bright ovals, which are anticyclones that appeared in January 2017. Both the wave pattern and the ovals may be associated with an impressive upsurge in stormy activity that has been observed in these latitudes this year. Another bright anticyclonic oval is seen further north. The Juno spacecraft may pass over these ovals, as well as the Great Red Spot, during its close approach to Jupiter on July 10, 2017, Pacific Time (July 11, Universal Time).

High hazes are evident over both polar regions with much spatial structure not previously been seen quite so clearly in ground-based images

The filters used for observations combined into this image admit infrared light centered on the following infrared wavelengths (and presented here in these colors): 1.69 microns (blue), 2.045 microns (cyan), 2.169 microns (green), 2.124 microns (yellow), and 2.275 microns (red).

Image Credit: Gemini Observatory/AURA/NASA/JPL-Caltech
Explanation from: https://photojournal.jpl.nasa.gov/catalog/PIA21713

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Monday, 18 September 2017

Aurora and Sunrise over Indian Ocean seen from the International Space Station

Aurora and Sunrise over Indian Ocean seen from the International Space Station

Aurora and Sunrise over Indian Ocean seen from the International Space Station

ISS, Orbit of the Earth
August 2015

Image Credit: NASA/ESA

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Sunday, 17 September 2017

Sunrise seen from the International Space Station

Sunrise seen from the International Space Station

Sunrise seen from the International Space Station

On July 26, 2017, a member of the Expedition 52 crew aboard the International Space Station took this photograph of one of the 16 sunrises they experience every day, as the orbiting laboratory travels around Earth. One of the solar panels that provides power to the station is seen in the upper left.

The stations solar arrays produce more power than it needs at one time for station systems and experiments. When the station is in sunlight, about 60 percent of the electricity that the solar arrays generate is used to charge the stations batteries. The batteries power the station when it is not in the Sun.

Image Credit: NASA
Explanation from: https://www.nasa.gov/image-feature/sunrise-through-the-solar-arrays

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Saturday, 16 September 2017

The Bahamas seen from the International Space Station

The Bahamas seen from the International Space Station

The Bahamas seen from the International Space Station

One of the most recognizable points on the Earth for astronauts to photograph is the Bahamas, captured in striking images many times from the vantage point of the International Space Station. Expedition 52 Flight Engineer Randy Bresnik of NASA took this photo on Aug. 13, 2017.

Image Credit: NASA
Explanation from: https://www.nasa.gov/image-feature/space-station-flight-over-the-bahamas

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Monday, 4 September 2017

Cumulonimbus Cloud seen from the International Space Station

Cumulonimbus Cloud seen from the International Space Station

Cumulonimbus Cloud seen from the International Space Station

The cauliflower-like formations above the flat part of this cumulonimbus cloud represent overshooting cloud tops. Overshooting tops occur when forces push the clouds up through the troposphere, the lowest region of the atmosphere, and into the stratosphere. The warm central Pacific Ocean sea surface during the 2015-2016 El Ni�o lofted abnormal amounts of cloud ice and water vapor into the stratosphere, creating conditions similar to those that could occur on a larger scale in a warming world.

Image Credit: NASA/ESA
Explanation from: https://www.nasa.gov/feature/langley/2015-2016-el-ni-o-provided-natural-experiment-on-the-effects-of-warming-seas

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Sunday, 27 August 2017

Solar Eclipse seen over Ross Lake

Solar Eclipse seen over Ross Lake

Solar Eclipse seen over Ross Lake

This composite image shows the progression of a partial solar eclipse over Ross Lake, in Northern Cascades National Park, Washington on Monday, August 21, 2017. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American continent along with parts of South America, Africa, and Europe.

Image Credit: NASA/Bill Ingalls
Explanation from: https://www.nasa.gov/image-feature/glory-of-the-heavens

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Friday, 25 August 2017

Milky Way Galaxy seen over Auxiliary Telescope

Milky Way Galaxy seen over Auxiliary Telescope

Milky Way Galaxy seen over Auxiliary Telescope

This image captures the route from the Residencia � the guesthouse for visitors to ESOs Paranal Observatory� to the breathtaking heart of the Milky Way, which covers the entire night sky.

The site shown here is Cerro Paranal, home to ESOs Very Large Telescope (VLT), a telescope comprising four 8.2-metre Unit Telescopes. The VLT can also act as an interferometer in the form of the appropriately-named VLT Interferometer, or VLTI, by gathering additional light from four smaller Auxiliary Telescopes, which can be independently moved around and placed in different configurations. One of these Auxiliary Telescopes is shown in this image, gazing at the sky with its dome wide open.

The road from the observatory to the Residencia appears as a shining thread, weaving amongst the rocky outcrops and hills of the desert environment. The yellow glow is caused by dim security lights � the street lighting is kept to a minimum in order to avoid unnecessary light pollution.

Image Credit: ESO/B. Tafreshi
Explanation from: https://www.eso.org/public/images/potw1732a/

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Wednesday, 16 August 2017

Earths Atmosphere seen from the International Space Station

Earths Atmosphere seen from the International Space Station

Earths Atmosphere seen from the International Space Station

The thin line of Earths atmosphere and the blackness of space are featured in this image photographed by an Expedition 24 crew member on the International Space Station.

Image Credit: NASA

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Tuesday, 15 August 2017

Moon seen from the International Space Station

Moon seen from the International Space Station

Moon seen from the International Space Station

From his vantage point in low Earth orbit aboard the International Space Station, NASA astronaut Randy Bresnik pointed his camera toward the rising Moon and captured this beautiful image on August 3, 2017.

Image Credit: NASA

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Thursday, 10 August 2017

The Southern Cross Milky Way and Carina Nebula seen over Amboseli National Park

The Southern Cross Milky Way and Carina Nebula seen over Amboseli National Park

The Southern Cross, Milky Way and Carina Nebula seen over Amboseli National Park

Amboseli National Park, Kajiado County, Kenya

Image Credit & Copyright: Babak Tafreshi

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Aurora seen from the International Space Station

Aurora seen from the International Space Station

Aurora seen from the International Space Station

Expedition 52 Flight Engineer Jack Fischer of NASA shared photos of a glowing green aurora seen from his vantage point 250 miles up, aboard the International Space Station. This aurora photo was taken on June 26, 2017.

Image Credit: NASA

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Saturday, 5 August 2017

Grand Canyon seen from the International Space Station

Grand Canyon seen from the International Space Station

Grand Canyon seen from the International Space Station

On April 3, 2017, the student-controlled EarthKAM camera aboard the International Space Station captured this photograph of a favorite target -- the Grand Canyon -- from low Earth orbit. The camera has been aboard the orbiting outpost since the first space station expedition began in November 2000 and supports approximately four missions annually.

The Sally Ride Earth Knowledge Acquired by Middle School Students (Sally Ride EarthKAM) program provides a unique educational opportunity for thousands of students multiple times a year. EarthKAM is an international award-winning education program, allowing students to photograph and analyze our planet from the perspective of the International Space Station. Using the Internet, students control a special digital camera on the orbiting laboratory to photograph Earths coastlines, mountain ranges and other interesting geographical topography.

Image Credit: Sally Ride EarthKAM
Explanation from: https://www.nasa.gov/image-feature/space-stations-earthkam-sees-the-grand-canyon/

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Earth and Dragon Spacecraft seen from the International Space Station

Earth and Dragon Spacecraft seen from the International Space Station

Earth and Dragon Spacecraft seen from the International Space Station

NASA astronaut Jack Fischer photographed the SpaceX Dragon capsule as it reentered Earths atmosphere before splashing down in the Pacific Ocean west of Baja California at 8:12 a.m. EDT, July 3, 2017. Fischer commented, "Beautiful expanse of stars-but the �long� orange one is SpaceX-11 reentering! Congrats team for a successful splashdown & great mission!"

A variety of technological and biological studies conducted on the International Space Station are returning in Dragon. The Fruit Fly Lab-02 experiment seeks to better understand the effects of prolonged exposure to microgravity on the heart. Samples from the Systemic Therapy of NELL-1 for osteoporosis will return as part of an investigation using rodents as models to test a new drug that can both rebuild bone and block further bone loss, improving crew health. The Cardiac Stem Cells experiment investigated how microgravity affects stem cells and the factors that govern stem cell activity.

The Dragon spacecraft launched June 3 on a SpaceX Falcon 9 rocket from historic Launch Complex 39A at NASA�s Kennedy Space Center in Florida, and arrived at the station June 5.

Image Credit: NASA
Explanation from: https://www.nasa.gov/image-feature/dragon-returns-space-station-science-to-earth

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