New Discoveries *3* - ...MORE deep space, extraplanetary, etc.

Palomar · 2004-10-05 12:18:14

http://antwrp.gsfc.nasa.gov/apod/ap010523.html]Orange soil on the Moon

*From an ancient fire fountain?

--Cindy

Palomar · 2004-10-06 06:08:18

http://www.spacedaily.com/news/stellar-04r.html]Stellar vampirism

*A magnetic catacylsmic variable binary. EF Eri...approximately 300 light years away. One of the pair is a celestial object which has no classification now that most of its mass has been gobbled up by its partner.

Weird.

--Cindy

::EDIT:: http://antwrp.gsfc.nasa.gov/apod/ap041006.html]N11: Giant Ring of Emission Nebulae Lovely.

SpaceNut · 2004-10-06 08:06:25

Binary star system no more, now it is a single star with a new companion super sized planet.

Mystery Object Neither Star Nor Brown Dwarf
http://www.gemini.edu/index.php?option= … view&id=73

Palomar · 2004-10-06 08:30:05

http://www.spaceflightnow.com/news/n041 … /]Frequent starbursts sterilize center of Milky Way

*...is due for another starburst in 10 million years (Earth will be safely far enough away -- if we've survived that long).

Staggering: 30 million solar masses of matter will flood inward. Our galaxy's central black hole is "only" 3 million solar masses, so it'll only consume a portion of the gas belched out during the starburst. Analogy: "It would be like trying to fill a dog dish with a firehose."

"The gas for each starburst comes from a ring of material located about 500 light-years from the center of our galaxy. Gas collects there under the influence of the galactic bar-a stretched oval of stars 6,000 light-years long rotating in the middle of the Milky Way. Tidal forces and interactions with this bar cause the ring of gas to build up to higher and higher densities until it reaches a critical density or 'tipping point.' At that point, the gas collapses down into the galactic center and smashes together, fueling a huge burst of star formation."

--Cindy

SpaceNut · 2004-10-06 09:21:33

More data on the binary star as reported on as a New Star-Type Stillborn spin story line. This time Astronomers using the Gemini North and Keck II telescopes have been able to peer into this star pair.

http://www.spacedaily.com/news/stellar-04r.html

Palomar · 2004-10-08 05:49:39

*Hosted by spaceweather.com. "The Moon's orbit around Earth isn't a perfect circle, it's an ellipse (eccentricity 5%). This means the Earth-Moon distance varies. At perigee, the Moon's closest approach, the Moon is 50 thousand km nearer to us than it is at apogee, its greatest distance. You can see the difference":

http://www.spaceweather.com/swpod2004/0 … .jpg]Click

Mr. Di Nasso took these photos from Pisa, Italy. Cool to see the actual difference.

"The next three full moons, by the way, will be unusually small because they all fall near apogee."

--Cindy

Palomar · 2004-10-08 11:27:59

*And now it's time to play Share a Nebula Picture with your host, Bob Barker! {{wild applause, cheers}} :laugh:

http://antwrp.gsfc.nasa.gov/apod/ap020701.html]Fox Fur Nebula

-*-

http://antwrp.gsfc.nasa.gov/apod/ap030512.html]Vicinity of Cone & Fox Fur Nebulae

-*-

http://antwrp.gsfc.nasa.gov/apod/ap0204 … ]Something this way slithers

-*-

http://antwrp.gsfc.nasa.gov/apod/ap9605 … ddly-named nebula (Pipe Dark - ?)

Pretty purples and crimsons, rich star field. :up:

--Cindy

SpaceNut · 2004-10-08 11:31:35

Well the crowd is cheering and here is one back for you.

Truly an Image of Another World

This image was taken by Rover Opportunity's Navcam inside Endeavour Crater, Meridiani, Mars on 6 October 2004.

http://www.spaceref.com/news/viewsr.html?pid=14154

Palomar · 2004-10-08 12:46:05

*Glad you enjoyed the pics, SpaceNut.

I just found this one:

http://antwrp.gsfc.nasa.gov/apod/ap030117.html]NGC 7635: The Bubble Nebula

Article says it's so large that if The Bubble were centered on our Sun, it would encompass Alpha Centauri.

Looks so delicate, like a red translucent pearl.

--Cindy

Palomar · 2004-10-13 06:23:14

http://www.spacedaily.com/news/milkyway-04l.html]Newly found star cluster...

*...may be final Milky Way fossil.

Spitzer and U of Wyoming Infrared Observatory discovered it. "It's like finding a long-lost cousin...We thought all the galaxy's globular clusters had already been found." -- Dr. Chip Kobulnicky, a professor of physics and astronomy at U of W. (Yeah, I'd presumed that was so as well, based on the reading I do :laugh: )

The cluster is 9000 l/y from Earth, in constellation Aquila. Mass of 300,000 Suns.

"The cluster's apparent size, as viewed from Earth, is comparable to a grain of rice held at arm's length."

Way to go!

-*-

http://antwrp.gsfc.nasa.gov/apod/ap041012.html]Oh my stars! Was going to post this today anyway...might as well tack it to this post. Discusses RR Lyrae stars.

"...the time it takes for a star to fluctuate noticeably can be less than one night. In fact, the above time lapse movie of bright globular cluster M3 was taken over a single night." Can see the fluctuations of star brightness in the image. Looks like holiday lights. :up: So pretty.

--Cindy

Palomar · 2004-10-19 05:53:57

http://antwrp.gsfc.nasa.gov/apod/ap950715.html]Callisto Crater Chain
*Very interesting explanation. :up:

http://antwrp.gsfc.nasa.gov/apod/ap011215.html]All in the family, I guess...

Ganymede crater chain!

--Cindy

Mad Grad Student · 2004-10-19 23:26:29

Whew, it really is a jungle out there!

Well, not really. It's more of a vast, desolate desert, but there are just enough oasises (oasi, what's the plural on that?) to keep the place interesting. Thanks for the links, Cindy. You've of course all seen this, but it has to be one of the most beautiful images ever captured by a camera.

http://www.exchangedlife.com/Cosmos/ima … on.jpg]The Pillars of Creation

Palomar · 2004-10-20 14:41:19

You've of course all seen this, but it has to be one of the most beautiful images ever captured by a camera.
http://www.exchangedlife.com/Cosmos/ima … on.jpg]The Pillars of Creation

*Splendid indeed. I've got a poster of the Pillars of Creation here in my office. :up:

http://www.universetoday.com/am/publish … 0102004]Is it a globular cluster or a dwarf galaxy?

*Mystery object in the Milky Way's Halo:

"A discovery announced today by the Sloan Digital Sky Survey (SDSS) reveals a clump of stars unlike any seen before."

*It was found while they searched for dim companion galaxies to our Milky Way.

"Another possibility...is that Willman 1 is an unusual type of globular cluster, a spherical agglomeration of thousands to millions of old stars...

The real distinction between the globular cluster and dwarf galaxy interpretations is that galaxies are usually accompanied by substantial quantities of dark matter...; 'Clearly the next step is to carry out additional measurements to determine whether there is any dark matter associated with Willman 1.'"

*Includes image.

--Cindy

Palomar · 2004-10-21 06:25:26

http://antwrp.gsfc.nasa.gov/apod/ap041020.html]Stunning

*NGC 281. Open star cluster, Bok globules, dust lanes.

-*-

http://antwrp.gsfc.nasa.gov/apod/ap0410 … Spirograph Nebula

*False color to bring out the details. Wild! They repeat this image every so often at Astropix; what the heck, maybe it's time to finally post it.

"...shows patterns that are not well understood. Perhaps they are related to chaotic winds from the variable central star, which changes brightness unpredictably in just a few hours. By contrast, evidence indicates that only a few million years ago, IC 418 was probably a well-understood star similar to our Sun."

Can't help wondering what Sol's nebula will look like. Guess I won't be around...

--Cindy

Palomar · 2004-10-25 10:35:54

*A hodge-podge of stuff:

http://antwrp.gsfc.nasa.gov/apod/ap030706.html]Fractal interstellar dust up-close Interesting.

-*-

http://antwrp.gsfc.nasa.gov/apod/ap0410 … Adjectives fail to describe the magnitude of this beauty... If there's a Heaven, it must look like that. Stellar nursery...pillars and globules...winds...walls of gas and dust.

-*-

http://antwrp.gsfc.nasa.gov/apod/ap000131.html]Okay... So the Earth is hardly a new discovery and neither is snow nor snowstorms, but this is an awesome pic!

--Cindy

SpaceNut · 2004-10-25 13:55:25

Could this be the viewing of what is known as dark matter. A haze that can not be explained.

A hazy view of dark matter, Excess microwaves from the galactic center may arise from dark matter

Palomar · 2004-10-26 09:54:15

http://www.space.com/scienceastronomy/r … html]Rebel Stars cross Paths with Sun

*Awesome article (is short). We're not in any immediate danger, though.

"Meanwhile, our next known close encounter with another star will occur 1.4 million years from now.

A star named Gliese 710, found by Hipparcos and reported in 1999, will pass within 1 light-year of the Sun. That puts it some 70,000 times the distance from Earth to the Sun, on the very fringes of our solar system where icy objects are thought to roam in what's known as the Oort Cloud."

--Cindy

SpaceNut · 2004-10-26 21:31:59

More on the haze of possible dark energy.
Chandra's Find of Lonely Halo Raises Questions About Dark Matter
http://chandra.harvard.edu/press/04_rel … 02604.html

And another mystery is with regards to the big bang and of time.
Scientists zero in on why time flows in one direction
http://www.eurekalert.org/pub_releases/ … 102604.php

Palomar · 2004-10-27 09:45:35

And another mystery is with regards to the big bang and of time.
Scientists zero in on why time flows in one direction
http://www.eurekalert.org/pub_releases/ … 102604.php

*Ay carrumba! We need an emoticon of a crumpled mouth with crossed-eyes going round and round. :laugh:

Thanks for pointing out this article, SpaceNut. I read the spaceref.com version. This:

But even empty space has faint traces of energy that fluctuate on the subatomic scale. As suggested previously by Jaume Garriga of Universitat Autonoma de Barcelona and Alexander Vilenkin of Tufts University, these flucuations can generate their own big bangs in tiny areas of the universe, widely separated in time and space. Carroll and Chen extend this idea in dramatic fashion, suggesting that inflation could start "in reverse" in the distant past of our universe, so that time could appear to run backwards (from our perspective) to observers far in our past.
Regardless of the direction they run in, the new universes created in these big bangs will continue the process of increasing entropy. In this never-ending cycle, the universe never achieves equilibrium. If it did achieve equilibrium, nothing would ever happen. There would be no arrow of time.
"There's no state you can go to that is maximal entropy. You can always increase the entropy more by creating a new universe and allowing it to expand and cool off," Carroll explained.

Oh yeah...sure. :-\ Love this stuff. <grin>

--Cindy

SpaceNut · 2004-10-27 10:08:35

Well if you thought the big bang was a bang how about a wandering star...Rebel Stars Cross Paths with Sun

Wow we now have super highways for the stars to travel from galaxy by way of gravitational (density) waves from the galatic center of the milky way. There is also to be a close call as it were a star named Gliese 710, found by Hipparcos and reported in 1999, will pass within 1 light-year of the Sun. But do not fret it will only be a mere 1.4 million years from now.

And I thought Nasa was slow... with the CEV design and such for the space exploration vision.

Edit:
yup I see it now...
Still makes you wonder though about what we really know about gravity, time and the internal driving force that makes up the fabric of space.

Palomar · 2004-10-27 10:12:15

Well if you thought the big bang was a bang how about a wandering star...http://www.space.com/scienceastronomy/rebel_stars_041026.html]Rebel Stars Cross Paths with Sun

*Yep...I posted that article just yesterday, in this thread. It's a good read.

--Cindy

SpaceNut · 2004-10-27 11:33:30

I finally had the time to load an watch the movie of the rebels on there own super highways. Quite beautiful. We will if gravity has its way on those close encounters quite possibly end up being a binary or more star system some day.

John Creighton · 2004-10-27 11:42:48

Could a close encounter from a star cause a mass of comets and asteroids from the Oort cloud to cross the path of the earth.

Palomar · 2004-10-27 12:24:40

We will if gravity has its way on those close encounters quite possibly end up being a binary or more star system some day.

*Well anything's possible I suppose, but I'd be more inclined to think another star getting that close to ours might result in them merging together. Would be a good question to ask a professional. If I knew one, that is.

--Cindy

SpaceNut · 2004-10-28 20:22:11

Well speaking of big bangs well not quite the same it now appears that a supernova may be to blame for Human advancment 3 million years ago. All from a layer of iron-60 isotope or chemical variant of iron that is rare on Earth. It has a decay rate or half-life of about 1.5 million years and the measured layer can be dated to about 2.8 million years ago

Ancient Star Dust May Point to Human Origins-Study
http://www.reuters.com/newsArt....6634433

Star dust found deep beneath the Pacific Ocean has led German scientists to speculate that a supernova explosion 3 million years ago might possibly have helped bring about human evolution.

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