Image of the Day….” Full Moon and Mars “

Have you seen Mars?

Best photos of Mars near the moon this weekend.  View larger.   Full moon and Mars over Dallas, Texas, from EarthSky friend Ben Zavala. They were bright enough to be seen from large cities.                                                                                                                            Posted by  in http://www.earthsky.org

Natarajan

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Image of the Day… Morning Sunglint Over the Pacific…!!!

Sunglint and clouds over the ocean photographed from low Earth orbit

This Earth observation composite image from the International Space Station captures morning sunglint and low clouds over the central Pacific Ocean. The image was put together at the Johnson Space Center in Houston, from a series of photographs taken by Expedition 47 Commander Jeff Williams on March 25, 2016.

Image Credit: NASA

source….www.nasa.gov

Natarajan

Image of the Day…” Liftoff at NASA’s 16th Annual Student Launch Challenge…”

Liftoff of one of dozens of high-powered rockets during the 16th annual Student Launch challenge, April 16, near NASA Marshall

One of dozens of high-powered rockets lifts off on April 16, 2016, during NASA’s 16th annual Student Launch challenge, held near Marshall Space Flight Center in Huntsville, Alabama from April 13-16.

Nearly 50 middle and high school, college and university teams from 22 states competed in the challenge, demonstrating advanced aerospace and engineering skills related to real-world activities and programs on NASA’s Journey to Mars. Teams spent the past eight months building and testing rockets designed to fly to an altitude of one mile, deploy an automated parachute system, and land safe enough for reuse, while other teams also designed scientific payloads for data collection during flight.

Preliminary winners for Student Launch were announced during an awards ceremony April 16, at the U.S. Space & Rocket Center in Huntsville, and hosted by Orbital ATK. The overall winners of Student Launch will be announced in early May, as the final calculations are still under review for accuracy.

Image Credit: NASA/MSFC/Charles Beason

 Source……..www.nasa.gov
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Image of the Day…Mars Rover Opportunity up high ….!!!

Mars rover up high, spies a dust devil

After making the steep-ever climb of any rover on Mars, Opportunity looked back along its own tracks toward a swirling Martian dust devil in the valley below.

From its perch high on a ridge, NASA's Mars Exploration Rover Opportunity recorded this image of a Martian dust devil twisting through the valley below. The view looks back at the rover's tracks leading up the north-facing slope of

View larger. | From high on a ridge, NASA’s Mars rover Opportunity recorded this image of a swirling Martian dust devil on March 31. Image via NASA/JPL-Caltech.

During its recent uphill drive to the top of Knudsen Ridge on Mars, the tilt of the Mars Opportunity rover reached 32 degrees, the steepest-ever for any rover on Mars. In this image – taken on March 31, 2016, the 4,332nd Martian day, or sol, of the rover’s work on Mars – you’re looking backwards along the rover’s tracks, with its camera aimed toward a dust devil twisting through the valley below.

In the image, the rover – which was launched from Earth in 2003 – has just climbed the north-facing slope of Knudsen Ridge on Mars. The ridge forms part of the southern edge of Marathon Valley.

Why is NASA’s image in black and white, by the way? It’s because it was taken with the Navcam on Opportunity, a camera that’s essential for enabling the rover to make its way across the surface of this alien world … but which doesn’t have a color camera.

Look below to see how artist Don Davis remedied the lack of color with some processing here on Earth:

Color-processed view of Opportunity's great dust devil shot, by artist Don Davis.  Read more about this image on Davis' Facebook page.

Color view of Opportunity’s great dust devil shot, by artist Don Davis. Read more on Davis’ Facebook page.

NASA commented:

Dust devils were a common sight for Opportunity’s twin rover, Spirit, in its outpost at Gusev Crater, but Opportunity has seen them only rarely.

Just as on Earth, a dust devil is created by a rising, rotating column of hot air. When the column whirls fast enough, it picks up tiny grains of dust from the ground, making the vortex visible.

Artist's concept of the rover Opportunity on Mars. This rover - and its twin rover Spirit - were launched from Earth in 2003. Image via NASA

Artist’s concept of the rover Opportunity on Mars. This rover – and its twin rover Spirit – were launched from Earth in 2003. Image via NASA

Bottom line: Mars Opportunity rover image of a dust devil, from a perch on Knudsen Ridge on Mars, part of the southern edge of Marathon Valley, acquired on March 31, 2016, the 4,332nd Martian day, or sol, of the rover’s work on Mars.

Source….www.earthsky.org

Natarajan

Image of the Day…” Busy Traffic at International Space Station …” !!!

Docked Soyuz spacecraft in center of frame with Cygnus cargo craft at left and Progress craft at right with Earth below

Expedition 47 Flight Engineer Tim Peake of the European Space Agency took this photograph on April 6, 2016, as the International Space Station flew over Madagascar, showing three of the five spacecraft currently docked to the station. The station crew awaits the scheduled launch today, April 8, of the third resupply vehicle in three weeks: a SpaceX Dragon cargo spacecraft, which will be the sixth spacecraft docked following its arrival and installation to the Harmony module on Sunday, April 10. Dragon is carrying 6,900 pounds (3,130 kilograms) of science, crew supplies and hardware; the largest payload is theBigelow Expandable Activity Module (BEAM). The BEAM will be attached to the Tranquility module a week after its arrival for a series of habitability tests over two years.

Orbital ATK’s Cygnus cargo craft, visible at the left of this image, was bolted into place on the Earth-facing port of the station’s Unity module on March 26, 2016. Although the SpaceX and Orbital ATK spacecraft have made 12 launches between them, this will be the first time that the two vehicles, contracted by NASA and developed by private industry to resupply the station, are connected to the space station at the same time.

Image Credit: ESA/NASA

Source…….www.nasa.gov
Natarajan

Image of the Day…” 40000 feet over Greenland ” !!!

A clear day over one of the world’s two great ice sheets.

View larger. | The Oceans Melting Greenland (OMG) field campaign team is flying NASA’s G-III aircraft at about 40,000 feet. On a clear day, this altitude also provides a stunning perspective of one of the world’s two great ice sheets (the other is Antarctica). The flight Saturday, March 26, over the northeast coastline was one of those clear days. Read more about this image.

A science mission called the Oceans Melting Greenland field campaign is flying NASA’s G-III aircraft at about 40,000 feet over Greenland. On a clear day, this altitude also provides a stunning perspective of one of the world’s two great ice sheets (the other is Antarctica). The flight Saturday, March 26, 2016, over the northeast coastline was one of those clear days. Read more about this image. Image via NASA.

Source…..www.earthsky.org

Natarajan

Images of the Day…Monday Night Moon and Jupiter…….

EarthSky friends capture the night sky’s 2 brightest objects, the moon and Jupiter, on Monday night, March 21.

Moon and Jupiter - March 21 2016 - photographed in Tucson, Arizona by Eliot Herman.

 

Moon and Jupiter – March 21 2016 – photographed in Tucson, Arizona by Eliot Herman.

Jupiter and moon on March 21, 2016 from Jacob Zimmer in Louisville, Kentucky.

Jupiter and moon on March 21, 2016 from Jacob Zimmer in Louisville, Kentucky.

Moon and Jupiter on March 21, 2016 from Karl Diefenderfer in Pennsylvania.

Moon and Jupiter on March 21, 2016 from Karl Diefenderfer in Pennsylvania.

Source…….www.earthsky.org

Natarajan

Image of the Day… Total solar eclipse of March 9 2016 …

View larger. | March 9, 2016, total solar eclipse from Palu, Indonesia.  Photo by Justin Ng of Singapore.

View larger. | March 9, 2016, total solar eclipse from Palu, Indonesia. Photo by Justin Ng of Singapore, who wrote: “Sun’s corona extends millions of kilometers into space and it is visible to the unaided eye during a total solar eclipse. During totality, temperature at my location dropped by 10 to 15 degrees Celsius and I was able to see planet Venus and Mercury when the area became dark. I took 12 different exposures during totality to cover as much dynamic range as possible and stacked them in Photoshop to produce this image.”

Source…..www.earthsky.org

Natarajan

Image of the Day… Lunar shadow across Earth..

Lunar shadow moves across Earth

This is way cool. Watch the moon’s shadow move across Earth during the March 9 total solar eclipse. A first ever animation from deep space.

March 9, 2016. Image credit: NASA
March 9, 2016. Image credit: NASA

A camera aboard the DSCOVR satellite captured a unique view of this week’s solar eclipse. On March 9, 2016, residents of the Western Pacific looked up in the early morning hours to observe the only total solar eclipse of 2016, while DSCOVR looked down from a million miles away and captured the shadow of the moon crossing the planet.

In the animation above, the shadow of the new moon starts crossing the Indian Ocean and marches past Indonesia and Australia into the open waters and islands of Oceania (Melanesia, Micronesia, and Polynesia) and the Pacific Ocean. Note how the shadow moves in the same direction as Earth rotates. The bright spot in the center of each disk is sunglint — the reflection of sunlight directly back at the satellite’s camera.

NOAA’s DSCOVR satellite is the Nation’s first operational satellite in deep space. DSCOVR hovers between the sun and Earth at all times, maintaining a constant view of the sun and sun-lit side of Earth.

Adam Szabo is NASA’s project scientist for DSCOVR. He said:

What is unique for us is that being near the sun-Earth line, we follow the complete passage of the lunar shadow from one edge of the Earth to the other. A geosynchronous satellite would have to be lucky to have the middle of an eclipse at noon local time for it. I am not aware of anybody ever capturing the full eclipse in one set of images or video.

The animation above was assembled from 13 images acquired on March 9, 2016, by NASA’s Earth Polychromatic Imaging Camera (EPIC), a four-megapixel charge-coupled device (CCD) and Cassegrain telescope on the DSCOVR satellite.

Japan’s Himawari-8 satellite also captured a series of images showing the procession of the shadow during this eclipse, which you can view here.

Bottom line: On March 9, 2016, a camera aboard the DSCOVR satellite captured the shadow of the moon crossing Earth from a million miles away during the only total solar eclipse of 2016.

Source…..www.earthsky.org

Natarajan

” One-Year Crew Returns to Earth…”

Soyuz capsule with parachute deployed descends through clouds on the way to landing

The Soyuz TMA-18M spacecraft is seen as it lands with Expedition 46 Commander Scott Kelly of NASA and Russian cosmonauts Mikhail Kornienko and Sergey Volkov of Roscosmos near the town of Zhezkazgan, Kazakhstan on Wednesday, March 2, 2016 (Kazakh time). Kelly and Kornienko completed an International Space Station record year-long mission to collect valuable data on the effect of long duration weightlessness on the human body that will be used to formulate a human mission to Mars. Volkov returned after spending six months on the station.

Photo Credit: (NASA/Bill Ingalls)

Source….www.nasa.gov

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