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Amazing video!
Planetary Scientists Discover Mysterious Geologic Object on Titan

[Image: image_2009_1-Titan.jpg]

Quote:A team of planetary researchers, led by Jason Hofgartner of Cornell University, has announced the discovery of an anomalous, bright geologic object – where one never existed – in Titan’s norther polar sea, Ligeia Mare.

Discovered in 1655 by Dutch astronomer Christiaan Huygens, Titan is the largest of the Saturn’s known 62 moons.

Titan is the second largest moon in our Solar System and the only moon known to have clouds and a thick, planet-like nitrogen-methane atmosphere. It bears close resemblance to Earth, with wind and rain driving the creation of strikingly familiar landscapes.

Under its hazy atmosphere, scientists have found mountains, dunes, lakes and seas, including Ligeia Mare – the second-largest sea on Titan.

The newly discovered geologic feature, dubbed the ‘Magic Island,’ was detected in Ligeia Mare by NASA/ESA Cassini spacecraft’s Titan Radar Mapper instrument in July 2013.

“This discovery tells us that the liquids in Titan’s northern hemisphere are not simply stagnant and unchanging, but rather that changes do occur,” said Mr Hofgartner, who is the first author of a paper published in the Nature Geoscience.

“We don’t know precisely what caused this Magic Island to appear, but we’d like to study it further.”

Can't help but thinking of this. S13

[Image: 2001Space_017Pyxurz.jpg]
Yep, couldn't be anything else. S22
A collection of videos telling you just about anything that you would like to know about "Black Holes".
Believe it or not you can actually hear sounds in space due to electromagnetic waves.

Here are samples collected by probes.

It looks as though all those folks from the 50s, making those absolutely unforgettable scifi movie sounds, had it right, all along. And especially the "Forbidden Planet" guys. Wow! S22

Also, I want to thank you for jogging my memory here. I've been meaning to begin a thread on the concept of the Electronic(Plasma) Universe. Its an alternate theory of the universe, and may be beginning to make more sense to me. I'll have to go and 'bone' up on it before posting.

Thanks Robert. S26
Rosetta arrives near Comet 67P/Churyumov-Gerasimenko
[Image: Comet_on_3_August_2014_node_full_image_2.png]

What an incredible picture!

Matt Taylor, ESA’s Rosetta project scientist Wrote:Is this double-lobed structure built from two separate comets that came together in the Solar System’s history, or is it one comet that has eroded dramatically and asymmetrically over time?
Comet 67P/Churyumov–Gerasimenko is only 3.5×4 km (2.2×2.5 mi) in size. But even that, how would you like to have it slam into the planet? I'll bet it could reek havoc, don't you think? Shock

Its a shame, but these days I view all comets as a potential catastrophe, knowing what I do about mass extinctions. S11
A comet is composed of ice. It will melt and desintegrate much faster than rocky asteroid as it enters our atmosphere.
They are in much less number too.
(08-07-2014, 05:33 PM)Fredledingue Wrote: [ -> ]A comet is composed of ice. It will melt and desintegrate much faster than rocky asteroid as it enters our atmosphere.
They are in much less number too.

That's not correct Fred. Comets are composed of many different things, water ice being one of them. Some have more water ice than others.

Certainly you don't think that huge crater Chicxulub crater was caused by just water ice do you? S5
If a comet is composed of too much solid and not enough frozen liquid or frozen gas, it's called an asteroid, not a comet.

The picture is extraordinary because it's the first one of a comet, that close and without activity. The first time the solid core of a comet has been photographied. This is only possible very far from the sun.

The shape of it has surprised everyone.
Fred, I believe it is less active because it is still a good way out from the sun. But its beginning to come to life.

What is interesting, to me anyway, is that the closest Comet 67P/Churyumov–Gerasimenko will come to the sun will be between earth and mars. I thought they would naturally be pulled around the sun and slung out again, but not this guy.

And the fact that it has a 6.5 year orbital cycle means that it will only move out to the Kuiper Belt, instead of out to the Oort Cloud. It seems to me that somewhere in its history, it came out of the Oort Cloud, swung around the sun, and then was corralled by either Jupiter or Saturn into making a shorter orbit sequence. I have read somewhere that comets tend to start out in the Oort cloud, and eventually get moved to the Kuiper Belt. This guy just seems to have an unusually wide orbit, which means that eventually it will again get in the way of Mars or Jupiter.
JL Wrote:Fred, I believe it is less active because it is still a good way out from the sun. But its beginning to come to life.
Yes, that's what's so amazing: They did the picture where it was too far from the sun to be active. The first time we got a picture of an inactive comet.

And the probe will observe it as it become active coming slowly closer to the sun.

They also plan to harpoon a smal robot on its surface...
More frm Rosetta:
[Image: 67pcomet-640x635.jpg]
exists in 3D:
Now, here's something to really keep our eye on: Rethinking the origins of the universe.

[Image: black-holeSPOT.png]

Quote:Black holes have long captured the public imagination and been the subject of popular culture, from Star Trek to Hollywood. They are the ultimate unknown – the blackest and most dense objects in the universe that do not even let light escape.

And as if they weren’t bizarre enough to begin with, now add this to the mix: they don’t exist.

By merging two seemingly conflicting theories, Laura Mersini-Houghton, a physics professor at UNC-Chapel Hill in the College of Arts and Sciences, has proven, mathematically, that black holes can never come into being in the first place. The work not only forces scientists to reimagine the fabric of space-time, but also rethink the origins of the universe.

This could be a Big Deal, or........................................................

Here two big position papers are linked at the bottom of the article.

And the Big Food Fight is just beginning.
Then there is no black hole at the center of our galaxy? That sounds like good news to me!
(09-26-2014, 08:46 PM)Ron Lambert Wrote: [ -> ]Then there is no black hole at the center of our galaxy? That sounds like good news to me!

Did you read the article, and the counter article?

What is interesting is that it appears even dwarf galaxies have super-massive black holes at their centers. This is leading others to speculate that the black hole came first and the dwarf galaxies accumulated around them. Its fascinating to read about all the theories abounding.

I still need to spend more time on this topic of the Electric/Plasma Universe. It has some established scientists promoting it.
No black holes? Then what about the Golfer?
Solar Flare Alert! Any time now, we can expect the media to pick up on NASA's warning that we are probably about to have a major series of solar flares as a mega sunspot moves into our sights.

And note that there are only three sunspots, as the sun is winding down and heading into its acquiescence. One spot has moved off the scene, and another one is emerging.

Quote:GROWING CHANCE OF FLARES: Big sunspot AR2192 has grown even bigger, spreading across 1/3rd more solar terrain today than it did yesterday. NASA's Solar Dynamics Observatory recorded the expansion:

[Image: sunspot_anim.gif?PHPSESSID=4it9cq023j6mapn7fvhv5h6ve3]

The chances of an explosion are growing along with the sunspot. On Oct. 20th, NOAA forecasters boosted the odds of an M-class flare to 60% and an X-flare to 20%.

Yesterday, the sunspot produced a long-duration X1-flare (movie) and a strong HF radio blackout over Asia and Australia. The next X-flare, if one occurs, will be even more geoeffective as the sunspot turns toward Earth.
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