Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

First Images of Solar System's Invisible Frontier

ScuttleMonkey posted more than 6 years ago | from the champagne-method-to-science dept.

NASA 112

FiReaNGeL writes an unexpected side-effect from NASA's STEREO spacecraft has allowed scientists to see a much more well-defined picture of the boundary of our solar system. "The twin STEREO spacecraft were launched in 2006 into Earth's orbit about the sun to obtain stereo pictures of the sun's surface and to measure magnetic fields and ion fluxes associated with solar explosions. Between June and October 2007, however, the suprathermal electron sensor in the IMPACT (In-situ Measurements of Particles and CME Transients) suite of instruments on board each STEREO spacecraft detected neutral atoms originating from the same spot in the sky: the shock front and the heliosheath beyond, where the sun plunges through the interstellar medium."

Sorry! There are no comments related to the filter you selected.

Hot, that's really hot! (0, Offtopic)

blahbooboo (839709) | more than 6 years ago | (#24037167)

Wow, that's really hot! I get such a charge learning about NASA's projects!

hehe :) Get the puns? :P

Re:Hot, that's really hot! (2)

uberphear (984901) | more than 6 years ago | (#24037247)

Where's the "-1 *Groan*" mod when you need it?

Re:Hot, that's really hot! (5, Funny)

Jerome H (990344) | more than 6 years ago | (#24037463)

Re:Hot, that's really hot! (0)

Anonymous Coward | more than 6 years ago | (#24038379)

William Safire suggests the same thing, only he's a little nicer about it:

http://www.nytimes.com/2005/09/18/magazine/18onlanguage.html?scp=5&sq=safire+pun&st=nyt [nytimes.com]

The snippet:

A word of advice to the putative chief justice: when using a pun in a judicial opinion, do not write "excuse the bad pun." Remember, there are no "bad" puns - all plays on words are good, and the louder the groans they elicit, the better. And never forget, do not insult your audience by calling attention to the coming wordplay.

The pardon-my-pun flag says to the listener or reader, "You're probably too dim-witted to catch this, so I'm pointing it out to you beforehand."

hmmm (1)

nih (411096) | more than 6 years ago | (#24037205)

well i can't see a thing!

Re:hmmm (1)

Starayo (989319) | more than 6 years ago | (#24038261)

I came here fully expecting to see nothing but a huge, transparent .png...

Acronym in an Acronym? (5, Funny)

RManning (544016) | more than 6 years ago | (#24037217)

IMPACT (In-situ Measurements of Particles and CME Transient)

Dear God, an acronym inside another acronym! I think the space geeks have beat us computer geeks yet again.

Re:Acronym in an Acronym? (5, Insightful)

bunratty (545641) | more than 6 years ago | (#24037277)

Meh. It doesn't even recurse like GNU's Not Unix.

Re:Acronym in an Acronym? (2, Funny)

HTH NE1 (675604) | more than 6 years ago | (#24037353)

Just wait 'til they come up with something like GNW's Not WINE.

Re:Acronym in an Acronym? (1)

sconeu (64226) | more than 6 years ago | (#24038027)

And apparently XINU Is Not Unix, either.

But "The TTP Project" is, of course, the best.

Re:Acronym in an Acronym? (3, Funny)

corbettw (214229) | more than 6 years ago | (#24038111)

And apparently XINU Is Not Unix, either.

Of course not, Evil Galactic Overlords always use Windows.

Re:Acronym in an Acronym? (1)

MadnessASAP (1052274) | more than 6 years ago | (#24038193)

Man, if that was true they would NEED a hero to MAKE the Death Ray work.

Re:Acronym in an Acronym? (1)

c_forq (924234) | more than 6 years ago | (#24037367)

I'm sure if you let the GNU guys know they will make a recursive acronym inside of another recursive acronym.

Re:Acronym in an Acronym? (1)

Jesus_666 (702802) | more than 6 years ago | (#24037467)

They did, HURD. We all know how that played out.

Re:Acronym in an Acronym? (1)

Antique Geekmeister (740220) | more than 6 years ago | (#24040583)

He sad 'recursive', not 'accursed'.

[ I played with HURD some years back: there are compelling reasons to stick with Linux or any working, open source kernel. ]

Re:Acronym in an Acronym? (5, Funny)

Taibhsear (1286214) | more than 6 years ago | (#24037497)

It's acronyms all the way down...

Re:Acronym in an Acronym? (1)

florescent_beige (608235) | more than 6 years ago | (#24037805)

SSE

Re:Acronym in an Acronym? (0)

Anonymous Coward | more than 6 years ago | (#24037925)

RSS (RDF Site Summary)

Re:Acronym in an Acronym? (2, Informative)

Martin Blank (154261) | more than 6 years ago | (#24038163)

Technically, it's an abbreviation inside of an acronym. Acronyms are words formed from abbreviations, and so are a subset of abbreviations.

Simple rule: If it's generally pronounced as a word, it is an acronym. If the letters are generally spelled out, it's not an acronym.

Re:Acronym in an Acronym? (2, Informative)

Anti_Climax (447121) | more than 6 years ago | (#24038641)

When you abbreviate all the words in a phrase to their first letters and combine them into something that isn't a word, I think the term for it is 'initialism'

Re:Acronym in an Acronym? (2, Funny)

street struttin' (1249972) | more than 6 years ago | (#24043397)

When you abbreviate all the words in a phrase to their first letters and combine them into something that isn't a word, I think the term for it is 'initialism'

I thought the word was "Elitism". Or maybe just "malarkey".

Re:Acronym in an Acronym? (0)

Anonymous Coward | more than 6 years ago | (#24039989)

STFU, Martin! Not everybody agrees.

Re:Acronym in an Acronym? (1)

gstoddart (321705) | more than 6 years ago | (#24042271)

Simple rule: If it's generally pronounced as a word, it is an acronym. If the letters are generally spelled out, it's not an acronym.

Well, I guess you've lost the battle on that front, since TLA [wikipedia.org] is used by an awful lot of people.

I think to most people by now (grammar nazi's notwithstanding) no longer really differentiate based on if you pronounce it or not. (Oh, sure, it's not technically correct in a grammatical sense -- but, who is nowadays? ;-)

Cheers

Re:Acronym in an Acronym? (4, Funny)

GXTi (635121) | more than 6 years ago | (#24040167)

((GNU's Not Unix) Image Manipulation Program) Tool Kit

Can't think of something that uses GTK or I'd continue the fun!

Re:Acronym in an Acronym? (0)

Anonymous Coward | more than 6 years ago | (#24040887)

HURD is a mutually recursive acronym, standing for HIRD of Unix-Replacing Daemons, where HIRD stands for HURD of Interfaces Representing Depth. It is also a play on the words herd of gnus, reflecting how it works. (Wikipedia)

I think we win.

And a sign that reads... (4, Funny)

chill (34294) | more than 6 years ago | (#24037241)

Last chance for gas, 20,000,000,000 km. We have lotto tickets and cold beer!

On a more serious note, (1, Funny)

Anonymous Coward | more than 6 years ago | (#24037515)

I wonder if they found any more plutoids [newscientist.com] out there... Poor Pluto! [mathiaspedersen.com]

Re:On a more serious note, (1)

glittalogik (837604) | more than 6 years ago | (#24038395)

Pfft, Pluto's doing fine, it's got a whole category named after it now! All it needs is a leaked sex tape and it'll be the Verne Troyer [stuff.co.nz] of the Milky Way.

Re:And a sign that reads... (1)

stefanlasiewski (63134) | more than 6 years ago | (#24037823)

We have lotto tickets and cold beer!

But you need a towel. A towel will insulate the beer for a few minutes. You want cold beer, but not beer at -273C.

And a towel will absorb your tears when you discover that you lost the intergalactic lottery. Again.

Re:And a sign that reads... (1)

zapakh (1256518) | more than 6 years ago | (#24046307)

But you need a towel. A towel will insulate the beer for a few minutes. You want cold beer, but not beer at -273C.

Insulate it from what? Heat loss from conduction and convection is not much of an issue in the local environment, and radiation certainly takes longer than a few minutes. Besides, a towel won't help you keep your beer liquid.

Images of an invisible frontier? (5, Funny)

DigitalReverend (901909) | more than 6 years ago | (#24037245)

Would that be like recordings of silence or the smell of nothing?

Re:Images of an invisible frontier? (4, Funny)

neokushan (932374) | more than 6 years ago | (#24037259)

The sound of one hand clapping.

Re:Images of an invisible frontier? (0)

Anonymous Coward | more than 6 years ago | (#24037395)

>> The sound of one hand clapping.

What's that, when you watch orchestra porn on the computer?

Re:Images of an invisible frontier? (0)

Anonymous Coward | more than 6 years ago | (#24037499)

orchestra porn

And I thought I'd heard it all. I humbly request this become a meme.

Re:Images of an invisible frontier? (0)

Anonymous Coward | more than 6 years ago | (#24037659)

Rule 34 [urbandictionary.com]

Re:Images of an invisible frontier? (1)

Khyber (864651) | more than 6 years ago | (#24037575)

I can actually clap with one hand, learned the trick while figuring out how to pack a can of skoal. It's hell on your knuckles, though.

Re:Images of an invisible frontier? (1)

PakProtector (115173) | more than 6 years ago | (#24039021)

The sound of one hand clapping

Don't make me slap you.

Re:Images of an invisible frontier? (1)

indi0144 (1264518) | more than 6 years ago | (#24039361)

More like: If one hand claps in the middle of the forest...

Re:Images of an invisible frontier? (2, Funny)

felipekk (1007591) | more than 6 years ago | (#24037861)

Ask your wife if she gained some pounds and you shall see what an invisible frontier looks like.

Re:Images of an invisible frontier? (1)

gregbot9000 (1293772) | more than 6 years ago | (#24037939)

If you go by this article it would be more like a crudely drawn diagram of silence.

Also from TFA "The termination shock is the region of the heliosphere where the supersonic solar wind slows to subsonic speed"

Last I checked wasn't sonic speed something only relative to earth? Wouldn't that make this point completly arbitrary in a cosmic sense?

Re:Images of an invisible frontier? (4, Informative)

tchuladdiass (174342) | more than 6 years ago | (#24038577)

Also from TFA "The termination shock is the region of the heliosphere where the supersonic solar wind slows to subsonic speed"

Last I checked wasn't sonic speed something only relative to earth? Wouldn't that make this point completly arbitrary in a cosmic sense?

This was covered in the Slashdot post a while back about Voyager 2 crossing the termination shock. It boils down to the fact that the plasma from the solar wind does conduct waves, although due to the density of the particles and the nature of a plasma, the waves are much faster than the speed of sound through earth's atmosphere. So sonic speed does have a point (and related phenomena in this context. See this article [space.irfu.se] , or google "super sonic speed heliopause".

Re:Images of an invisible frontier? (1)

laejoh (648921) | more than 6 years ago | (#24040451)

Here, I made an ascii picture on what to expect:

Woooooosh (2, Insightful)

halsver (885120) | more than 6 years ago | (#24037289)

Not the sound the Solar system makes as it travels through the galaxy, but the sound of this article going over my head.

So this boundry is what exactly? The limit to which the solar winds reach out from the Sun and the interaction that they have when they hit the expansive nothing out there?

Re:Woooooosh (3, Funny)

lazyDog86 (1191443) | more than 6 years ago | (#24037457)

It, grasshopper, is the sound of one star clapping.

Re:Woooooosh (2, Insightful)

lazyDog86 (1191443) | more than 6 years ago | (#24037481)

Arrrrgghhh! One should refresh before posting if one does not wish to repeat someone else's joke. Go ahead mod me down, I can take it.

Re:Woooooosh (1)

Prosthetic_Lips (971097) | more than 6 years ago | (#24038563)

What do you mean, repeat? You took the joke everyone had seen, and EXPECTED (one hand clapping), and made it into something else completely (star).

That, my good sir, is sheer (comedic) genius. You could be the next George Carlin (that's pronounced, "dead comedian").

Re:Woooooosh (4, Insightful)

khallow (566160) | more than 6 years ago | (#24037539)

Interstellar space isn't empty. You have nebula and lots of (hundreds of billions?) stars spewing particles just like the Sun does, etc. So there is something for the solar wind to run into.

Re:Woooooosh (4, Informative)

florescent_beige (608235) | more than 6 years ago | (#24038093)

In our neighbourhood it's a a lot less dense [berkeley.edu] than average.

Even taking the average of about 1 hydrogen atom per cc, if you had a tube 1 cm in diameter that stretched from here to Alpha Centauri, the total mass inside the tube would be 3e-12 grams.

So yes theres stuff out there, but it wouldn't ruffle your hair if you put the convertible top down on your spaceship.

Re:Woooooosh (0)

Anonymous Coward | more than 6 years ago | (#24038927)

So yes theres stuff out there, but it wouldn't ruffle your hair if you put the convertible top down on your spaceship.

Well, if you were cruising along at some high fraction of the speed of light, it would do more than ruffle your hair.

That 1 cm diameter tube of Almost Nothing running into you (or you into it) at a high rate of speed would be like... Well, I'm sure the LHC people would sure like to strap detection instrumentation to you before you put the top down.

Oh, yeah- before I forget: make sure your helmet is on first before lowering the top. Not that it will help with the Cherenkov glow of your brain, but at least it'll keep the splatter off the dashboard.

Re:Woooooosh (1)

dintech (998802) | more than 6 years ago | (#24041227)

if you had a tube 1 cm in diameter that stretched from here to Alpha Centauri

Interesting. Let 'Big Oil' know when you get that to 60cm. :)

Re:Woooooosh (1)

khallow (566160) | more than 6 years ago | (#24041473)

But let's say your afro is a couple hundred AU [wikipedia.org] across and no more dense than the interstellar medium.

Re:Woooooosh (2, Funny)

corbettw (214229) | more than 6 years ago | (#24038731)

You have nebula and lots of (hundreds of billions?) stars

Ah yes, the approximation of the universe if Carl Sagan had been British.

Re:Woooooosh (1)

street struttin' (1249972) | more than 6 years ago | (#24043501)

Whenever life gets you down, Mrs.Brown And things seem hard or tough And people are stupid, obnoxious or daft And you feel that you've had quite enough Just remember that you're standing on a planet that's evolving And revolving at nine hundred miles an hour That's orbiting at nineteen miles a second, so it's reckoned A sun that is the source of all our power The sun and you and me and all the stars that we can see Are moving at a million miles a day In an outer spiral arm, at forty thousand miles an hour Of the galaxy we call the 'milky way' Our galaxy itself contains a hundred billion stars It's a hundred thousand light years side to side It bulges in the middle, sixteen thousand light years thick But out by us, it's just three thousand light years wide We're thirty thousand light years from galactic central point We go 'round every two hundred million years And our galaxy is only one of millions of billions In this amazing and expanding universe The universe itself keeps on expanding and expanding In all of the directions it can whizz As fast as it can go, the speed of light, you know Twelve million miles a minute and that's the fastest speed there is So remember, when you're feeling very small and insecure How amazingly unlikely is your birth And pray that there's intelligent life somewhere up in space 'Cause there's bugger all down here on Earth

Re:Woooooosh (1)

Eth1csGrad1ent (1175557) | more than 6 years ago | (#24037985)

Yep. The slashdot summary was like listening to the techno-babble
between Abby and McGee on NCIS... lots of cool words strung together,
but I didn't understand any of it...

Re:Woooooosh (3, Interesting)

jd (1658) | more than 6 years ago | (#24038157)

It's the boundary where the charged particles that make up the solar wind get blasted by the galactic wind. Somewhere on the perimeter of the galaxy, there will be a similar shock boundary where the galactic winds become too faint and get ripped sway by the intergalactic winds. The solar winds are supposed to offer considerable protection from the galactic winds and I seem to recall hearing that probes that go outside of the heliopause will need far more extensive shielding from radiation to handle the conditions they will meet.

Re:Woooooosh (1)

kalirion (728907) | more than 6 years ago | (#24044413)

Wait a second, if within the solar system the solar winds are more powerful than the galactic winds, wouldn't they also be more damaging?

Sloar system's velocity (5, Interesting)

em0te (807074) | more than 6 years ago | (#24037431)

Wouldn't it be possible, using the sun as a center point, to measure the distance to the termnation shock vs the boundaries of the heliosphere to determine how fast and in what vector our solar system is moving through space relative to the center of our galaxy? Or has this already been done, 'cause I can't find the info.
Possibly, using this information, couldn't an orbital pattern of our solar system be extrapolated against the center of the galaxy as a reference point?

Re:Sloar system's velocity (0, Insightful)

Anonymous Coward | more than 6 years ago | (#24037531)

Who's the dumbass who modded this as troll?

Re:Sloar system's velocity (1)

HJED (1304957) | more than 6 years ago | (#24037615)

one with mod points der..............

Troll mods (0)

Anonymous Coward | more than 6 years ago | (#24038457)

It's become clear that meta moderation does not work. Moderation does not become better over time scales of months, or even years, at it, in theory, should, if unfair moderations tossed morons out of the pool.

Re:Sloar system's velocity (4, Informative)

techno-vampire (666512) | more than 6 years ago | (#24037779)

I'm sure it's possible, but pointless. Decades ago, astronomers mapped proper motion and showed that all the stars were streaming away from a single point in the constellation Hercules. Presumably, that's where we're headed.

Re:Sloar system's velocity (4, Funny)

Dunbal (464142) | more than 6 years ago | (#24037789)

I'm sure it's possible, but pointless. Decades ago, astronomers mapped proper motion and showed that all the stars were streaming away from a single point in the constellation Hercules. Presumably, that's where we're headed.

      Makes you think, doesn't it? Everyone is getting the hell out of there and we're headed straight for it. Someone ought to do something about this... :)

Re:Sloar system's velocity (0)

Anonymous Coward | more than 6 years ago | (#24038899)

Makes you think, doesn't it? Everyone is getting the hell out of there and we're headed straight for it. Someone ought to do something about this... :)

It all reminds you of vaginal birth and the ensuing rendezvous years later in the act of sex, right?

Nature: It's so mindless and repetitive! ;)

Re:Sloar system's velocity (1)

servognome (738846) | more than 6 years ago | (#24040049)

Makes you think, doesn't it? Everyone is getting the hell out of there and we're headed straight for it. Someone ought to do something about this... :)

Why? I'm sure with them getting the hell away it's a buyer's market, we could triple or quadruple the size of our solar system, buy a few more planets, maybe even add another star to really brighten things up.

Re:Sloar system's velocity (0)

Anonymous Coward | more than 6 years ago | (#24042285)

They're probably all moving away because they found out a black hole was moving into the neighborhood.
 
... Lousy racist stars.

Re:Solar system's velocity (5, Informative)

Bemopolis (698691) | more than 6 years ago | (#24037981)

Well, the gas into which the Sun is driving the termination shock could also have a mean motion relative to the Keplerian velocity at its distance from Galactic center so...no.

However, the Sun's motion relative to the Galactic center is reasonably well known. It is based on looking at the velocities of stars in the local neighborhood (which should be in the same general orbit around Galactic center), and assuming that the average of these would be zero IF the Sun had no velocity except that required for its orbit around Galactic center. The average isn't, so the Sun has an extra velocity component, which is just the negative of this average. (The technical terms used for these quantities are the "solar motion" and the "Local Standard of Rest".) It turns out to be around 16.5 km/sec diagonally inward and slightly upward from its rotation.

Re:Solar system's velocity (2, Funny)

Thanshin (1188877) | more than 6 years ago | (#24040459)

[...]assuming that the average of these would be zero IF the Sun had no velocity except that required for its orbit
around Galactic center. The average isn't, so the Sun has an extra velocity component, which is just the negative of this average. It turns out to be around 16.5 km/sec diagonally inward and slightly upward from its rotation.

It must be funny getting lost in your neighborhood and asking you for directions.

Re:Solar system's velocity (1)

Antique Geekmeister (740220) | more than 6 years ago | (#24040591)

Would you prefer if he pointed out the Sun's path by the Starbucks we're passing?

Re:Sloar system's velocity (3, Informative)

Anonymous Coward | more than 6 years ago | (#24037995)

Have a look at this:
http://adsabs.harvard.edu/abs/1998MNRAS.298..387D

Re:Sloar system's velocity (1)

em0te (807074) | more than 6 years ago | (#24039673)

Awesome, thanks guys!

Re:Solar system's velocity (0)

Anonymous Coward | more than 6 years ago | (#24040083)

Have a look at this:
http://adsabs.harvard.edu/abs/1998MNRAS.298..387D

I believe you fail sir.

A Terry Gilliam fan writes (3, Funny)

metamatic (202216) | more than 6 years ago | (#24037625)

"Ah, so *that's* what an invisible frontier looks like!"

Re:A Terry Gilliam fan writes (0)

Anonymous Coward | more than 6 years ago | (#24037777)

Yes, it's populated by invisible polar bears.

the question is.. (2, Funny)

owlnation (858981) | more than 6 years ago | (#24037711)

...what does god need with a Twin Stereo Starship?

Call me when they have pictures... (2, Funny)

MRe_nl (306212) | more than 6 years ago | (#24037807)

of the universes invisible frontier ; )

Invisible? (1)

Kingrames (858416) | more than 6 years ago | (#24038059)

I wanna see!

Next they'll be telling us (1)

Mesa MIke (1193721) | more than 6 years ago | (#24038167)

.. that invisible unicorns are pink.

Math Quiz (4, Funny)

Pedrito (94783) | more than 6 years ago | (#24038433)

TFA: The termination shock is the region of the heliosphere where the supersonic solar wind slows to subsonic speed as it merges with the interstellar medium.

Okay boys and girls. Quick, grab your calculator and calculate the speed of sound in space...

Re:Math Quiz (5, Insightful)

ceoyoyo (59147) | more than 6 years ago | (#24038759)

c = (k p / Ï)^1/2

Put in the numbers and get your answer. The speed of sound in space works out to around 300 m/s in these parts.

Or were you under the impression that sound isn't transmitted in space? Sound we can hear isn't, but the ambient gas in space certainly does transmit disturbances, and will let you know if something passing through it exceeds the speed of sound by forming a shock wave.

Re:Math Quiz (1)

buttwidget (926171) | more than 6 years ago | (#24040499)

So what's this about passing gas? There's a shockwave, and thereby a sound?

Re:Math Quiz (1)

Antique Geekmeister (740220) | more than 6 years ago | (#24040595)

No, that's an "I'm shocked!" wave, and it happens _after_ a sound occurs.

Re:Math Quiz (1)

SimonGhent (57578) | more than 6 years ago | (#24040907)

Okay boys and girls. Quick, grab your calculator and calculate the speed of sound in space...

c = (k p / Ï)^1/2

OK, next question, calculate the speed of light in the dark.

(hint: will be easier with an LED calculator than an LCD one)

Re:Math Quiz (1)

kalirion (728907) | more than 6 years ago | (#24044485)

Wait a second, so the speed of sound in space is the same as the speed of sound in our air?

Re:Math Quiz (1)

Cypher04 (807337) | more than 6 years ago | (#24045249)

So if a tree falls on a bear in space and nobody is around, does it make a sound?

Geeks honor : (1)

ZarathustraDK (1291688) | more than 6 years ago | (#24038525)

the suprathermal electron sensor in the IMPACT (In-situ Measurements of Particles and CME Transients) suite of instruments on board each STEREO spacecraft detected neutral atoms originating from the same spot in the sky: the shock front and the heliosheath beyond, where the sun plunges through the interstellar medium."

Admit it, you don't know what it means.

idea (0)

Anonymous Coward | more than 6 years ago | (#24038665)

I have a great idea for a postcard:

"Space At Night"

but you see, (1)

serbanp (139486) | more than 6 years ago | (#24038849)

since it's invisible, there's nothing to see...

A giant Sloar! (0)

Anonymous Coward | more than 6 years ago | (#24038991)

What's a Sloar?

Moar Sloar (1)

slyborg (524607) | more than 6 years ago | (#24039079)

Gozer the Traveler. He will come in one of the pre-chosen forms. During the rectification of the Vuldrini, the traveler came as a large and moving Torg! Then, during the third reconciliation of the last of the McKetrick supplicants, they chose a new form for him: that of a giant Slor! Many Shuvs and Zuuls knew what it was to be roasted in the depths of the Slor that day, I can tell you!

nice picture... (5, Funny)

Ogive17 (691899) | more than 6 years ago | (#24039195)

I was expecting a picture that didn't look like something I drew today at work using MS Excel and autoshapes.

Re:nice picture... (1)

chord.wav (599850) | more than 6 years ago | (#24042307)

They are the "First IMAGES of Solar System's INVISIBLE Frontier" I was glad it wasn't any goatse or April's fools kind of thing.

Null (0)

Anonymous Coward | more than 6 years ago | (#24039509)

What no null jokes yet?

"Der Horizont vieler Menschen ist ein Kreis mit Radius Null -- und das nennen sie ihren Standpunkt."

Ironically this was the quote near the footer when I was about to post this.

Images of invisible stuff, neat! (1)

coffeemugger (1290114) | more than 6 years ago | (#24041045)

Images of invisible stuff, neat! What will NASA do next?

Re:Images of invisible stuff, neat! (1)

kalirion (728907) | more than 6 years ago | (#24044617)

Look for a Pink Unicorn of course.

Pictures?!!! (1)

Enrique1218 (603187) | more than 6 years ago | (#24041233)

If there is an article that says there is image of some astronomical phenomenon, then damnit I want some pictures! My taxpayer dollars go to pay for the equipment and I want something back. I don't care if it is invisible! Color it in, spruce it up, and post it. Coloring is the first thing anyone learns in Kindergarten. If you forgot, hire my niece. With a pack of Crayola, she will make invisible look interesting.

Helioshock? (1)

thebryce (1076543) | more than 6 years ago | (#24041821)

From TFA:

The termination shock is the region of the heliosphere where the supersonic solar wind slows to subsonic speed as it merges with the interstellar medium.

Why is anything relating to the sound-barrier even mentioned in this article? I was under the impression that there was no sound in the vacuum of space.

Re:Helioshock? (2, Informative)

pohl (872) | more than 6 years ago | (#24042823)

I'm going to go out on a limb and guess that they're putting the velocities into a frame of reference that more people can appreciate.

Re:Helioshock? (1)

Tim C (15259) | more than 6 years ago | (#24045321)

The interstellar medium is essentially a gas. An extremely thin gas, but a gas all the same. As such, it does indeed transmit sound and so objects can be said to be moving supersonically and subsonically through it.

Supersonic and subsonic are used to denote the speed relative to the speed of sound in the medium in question, just as they are in any fluid.

Did they photograph the sign that says... (1)

master_p (608214) | more than 6 years ago | (#24042559)

..."Hi. Can I take your order?" ???

But doesn't it look just like... (1)

Illbay (700081) | more than 6 years ago | (#24045509)

...the The Galactic Barrier [memory-alpha.org] ?

Only, you know, smaller?

Load More Comments
Slashdot Login

Need an Account?

Forgot your password?