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Category Archives: Hubble Telescope

My Movie ode to hubble telescope – Video

Posted: March 15, 2015 at 5:51 pm


My Movie ode to hubble telescope

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My Movie ode to hubble telescope - Video

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Jupiter's largest moon has an ocean, say scientists

Posted: at 5:51 pm

A salty ocean is lurking beneath the surface of Jupiter's largest moon, Ganymede, scientists using the Hubble Space Telescope have found.

The ocean onGanymede which is buried under a thick crust of ice could actually harbor more water than all of Earth's surface water combined, according to NASA officials. Scientists think the ocean is about 60 miles (100 kilometers) thick, 10 times the depth of Earth's oceans, NASA added. The new Hubble Space Telescope finding could also help scientists learn more about the plethora of potentially watery worlds that exist in the solar system and beyond.

"The solar system is now looking like a pretty soggy place," Jim Green, NASA's director of planetary science, said during a news teleconference today (March 12). Scientists are particularly interested in learning more about watery worlds because life as we know it depends on water to thrive. [See amazing photos of Ganymede]

Scientists have also found that Ganymede's surface shows signs of flooding. Youngparts of Ganymede seen in a videomap may have been formed by water bubbling up from the interior of the moon through faults or cryo-volcanos at some point in the moon's history, Green said.

Scientists have long suspected that there was anocean of liquid water on Ganymede the largest moon in the solar system, at about 3,273 miles (5,268 kilometers) across has an ocean of liquid water beneath its surface. The Galileo probe measured Ganymede's magnetic field in 2002, providing some data supporting the theory that the moon has an ocean. The newly announced evidence from the Hubble telescope is the most convincing data supporting the subsurface ocean theory yet, according to NASA.

Scientists used Hubble to monitor Ganymede's auroras, ribbons of light at the poles created by the moon's magnetic field. The moon'saurorasare also affected by Jupiter's magnetic field because of the moon's proximity to the huge planet.

When Jupiter's magnetic field changes, so does Ganymede's. Researchers were able to watch the two auroras "rock" back and forth with Hubble. Ganymede's aurora didn't rock as much as expected, so by monitoring that motion, the researchers concluded that a subsurface ocean was likely responsible for dampening the change in Ganymede's aurora created by Jupiter.

"I was always brainstorming how we could use a telescope in other ways," Joachim Saur, geophysicist and team leader of the new finding, said in a statement. "Is there a way you could use a telescope to look inside a planetary body? Then I thought, the aurorae! Because aurorae are controlled by the magnetic field, if you observe the aurorae in an appropriate way, you learn something about the magnetic field. If you know the magnetic field, then you know something about the moon's interior."

Hunting for auroras on other worlds could potentially help identify water-rich alien planets in the future, Heidi Hammel, executive vice president of the Association of Universities for Research in Astronomy, said during the teleconference. Scientists might be able to search for rocking auroras on exoplanets that could potentially harbor water using the lessons learned from the Hubble observations of Ganymede.

Astronomers might be able to detect oceans on planets near magnetically active stars using similar methods to those used by Saur and his research team, Hammel added.

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Jupiter's largest moon has an ocean, say scientists

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Hubble telescope spots ocean on Jupiter moon Ganymede

Posted: March 14, 2015 at 4:55 am

Traci Watson, Special for USA TODAY 1:32 p.m. EDT March 12, 2015

Photo of Ganymede, taken from NASA's Galileo spacecraft.(Photo: NASA)

The biggest moon in the solar system harbors a salty ocean beneath its frozen surface, according to a study that examined the moon's flickering auroras to probe its interior.

A number of worlds in our solar system are thought to have oceans. But this is the first clear-cut data of its kind to suggest that a sea lies hidden under the icy shell of Jupiter's moon Ganymede, which is 50% bigger than our own moon. Scientific models predicted an ocean on Ganymede, and when NASA's Galileo spacecraft visited Ganymede in the 1990s, it collected data that hinted at an ocean. But new images from the Hubble Space Telescope offer strong confirmation of a liquid body of water inside Ganymede, scientists say.

Galileo's observations "provide inconclusive evidence for the ocean," says study co-author Joachim Saur of the University of Cologne. "The Hubble data require an ocean."

Finding an ocean on a celestial body hundreds of millions of miles from Earth is no easy feat. Saur and his team turned to the space-going Hubble, which trained its keen eyes on Ganymede in 2010 and again in 2011. The Hubble focused on Ganymede's two auroras, shimmering patterns in the sky similar to the earthly phenomenon known as the Northern Lights. A person standing on Ganymede's surface and looking up would see a red glow, Saur says.

Ganymede has two auroras, one around its north pole and one around its south pole, both created in part by the moon's own magnetic field. These auroras don't stay fixed in place. Instead, they wander slightly across Ganymede's face. With the help of supercomputers, the scientists calculated how much Ganymede's auroras would shift if the moon had a salty sea. A layer of salty water could carry electrical current, generating another magnetic field that would affect the auroras.

Illustration of the interior of Ganymede, Jupiter's largest moon.(Photo: NASA)

The researchers found that the aurora shift witnessed by Hubble nicely matched the prediction of what should happen if Ganymede has an ocean. Just as importantly, the Hubble data did not match the prediction for an ocean-less Ganymede, the scientists reported online last month in the Journal of Geophysical Research.

Ganymede's ocean is sandwiched between two layers of ice. That's not particularly hospitable to life, says planetary scientist William McKinnon of Washington University in St. Louis, who didn't work on the new study. But Saur says it's still possible that Ganymede's waters are habitable.

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Ode to Hubble-Barinica – Video

Posted: March 13, 2015 at 3:53 pm


Ode to Hubble-Barinica
Video created as part of the ESA Ode to Hubble Competition in celebration of Hubble #39;s 25th year in orbit. Credit space images and videos: NASA/ESA,HUBBLE TELESCOPE.

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New Hubble Telescope images show star exploding 4 times – Video

Posted: March 12, 2015 at 7:50 pm


New Hubble Telescope images show star exploding 4 times
PROVIDED BY http://CNNNEXT.COM Astronomers observed the exciting and rare cosmic spectacle of a star exploding four times at different points across the galaxy, thanks to images produced by...

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Hubble Telescope : The Eagle Nebula : Hubble Space Telescope – Video

Posted: March 10, 2015 at 3:51 am


Hubble Telescope : The Eagle Nebula : Hubble Space Telescope
Combining Images and clips from NASA / ESA to create a stunning video that explores on the the Universes most amazing places: The Eagle Nebula Bringing you the BEST Space and Astronomy ...

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9 billion years later see star explode – Video

Posted: March 8, 2015 at 4:50 pm


9 billion years later see star explode
For the first time ever, the Hubble telescope captured these rare images of a supernova and a phenomenon known as Einstein #39;s Cross.

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The Hubble Space Telescope – EARTHS EYE IN THE UNIVERSE – NEW Space Documentary – Video

Posted: at 4:49 pm


The Hubble Space Telescope - EARTHS EYE IN THE UNIVERSE - NEW Space Documentary
This documentary and the rest of the documentaries presented relate to important times and figures in history, historic places and sites, archaeology, scienc... nova - the hubble telescope,...

By: Ranci Spol

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Hubble telescope finds a smile in space

Posted: at 4:49 pm

By Kate Seamons

Newser

The universe is smiling down on usalmost literally. The Hubble Telescope has captured a "smiley face" in space: two bright yellow eyes (a cluster of galaxies called SDSS J1038+4849), a white nose, and a faint smile and incomplete circle around the entire face.

But those curving lines "don't existor at least not in the form that we see them in the photo," writes Michelle Starr at CNET. As SpaceTelescope.org reports, galaxy clusters have a mammoth gravitational pull, and at Slate, astronomer Phil Plait explains why in pretty easy-to-understand terms: The cluster holds trillions of stars, which is "a lot of mass, and a lot of gravity." J1038 is roughly 4.5 billion light-years away, and past it, at a distance of 7.5 billion light-years, are additional galaxies.

When those galaxies' light passes through the area that's been altered by the cluster's gravity, the light is bent. The phenomenon is called gravitational lensing, and the "strongest" example of it is called an Einstein ring, as in the Hubble image.

As Starr writes, such rings "only occur when the source of the original light, gravitational lens, and observer are in exact alignment in a straight line." Though the observer in this case was Hubble, the image surfaced thanks to Judy Schmidt, who submitted the image via the "Hubble's Hidden Treasures" effort, which invites armchair astronomers to search the massive Hubble archive for "iconic" photos the public has never seen.

This image was released by NASA yesterday. The phenomenon of seeing non-existent faces in thingsit's known as face pareidoliahas been known for centuries, and last year, researchers confirmed that it's perfectly normal and relates to how our brains are wired.

Among the better-known instances of this occurring: the "Virgin Mary tree," "Google Earth Jesus," and "Griddle Virgin."

This article originally appeared on Newser: The Hubble Spots 'Smiley Face' in Space

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HUBBLE Telescope: A Look at ARP 273 – The Rose Galaxy Hubble Space Telescope – Video

Posted: March 7, 2015 at 5:52 pm


HUBBLE Telescope: A Look at ARP 273 - The Rose Galaxy Hubble Space Telescope
Combining existing videos and images from NASA and ESA with new footage , we take a new and closer look at ARP 273 the Rose Galaxy Bringing you the BEST Space and Astronomy videos online....

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