Εντοπίστηκαν χιόνια σε ένα… άστρο!

336bb042ed208f179725c1d9a27c7b35_XL
Διαβάστε επίσης

Ερευνητική ομάδα στις ΗΠΑ κατάφερε να παρατηρήσει απευθείας μια περιοχή μόνιμης… χιονοκάλυψης σε ένα αστρικό δίσκο. Είναι η πρώτη φορά που επιτυγχάνεται απευθείας παρατήρηση αυτού του κοσμικού φαινομένου, το οποίο σύμφωνα με τους ειδικούς παίζει κρίσιμο ρόλο στον σχηματισμό πλανητών.

Τα αστρικά χιόνια

Είναι γνωστό ότι γύρω από τα νεογέννητα άστρα σχηματίζονται δίσκοι ύλης και οι διεργασίες σε αυτόν τον δίσκο οδηγούν στον σχηματισμό πλανητών και άλλων διαστημικών αντικειμένων και σωμάτων όπως οι κομήτες.

Οι επιστήμονες με βάση τις μέχρι σήμερα παρατηρήσεις σε αστρικούς δίσκους είχαν οδηγηθεί εδώ και αρκετά χρόνια στην εκτίμηση ότι οι αστρικοί δίσκοι εμπεριέχουν και μια περιοχή στην οποία επικρατούν χαμηλές θερμοκρασίες και άλλες «εξωτικές» συνθήκες.

Οι ειδικοί μάλιστα έχουν παρομοιάσει αυτή την περιοχή με τα σημεία μόνιμης χιονοκάλυψης που υπάρχουν στα όρη της Γης. Οι επιστήμονες εκτιμούν ότι η περιοχή βρίσκεται περίπου στο κέντρο του δίσκου ύλης και σχετικά κοντά στο άστρο.

Εκτιμούν ότι στο εσωτερικό αυτής της περιοχής το νερό εξατμίζεται γεγονός που βοηθά στον σχηματισμό μικρών βραχωδών πλανητών σαν τον Αρη και τη Γη.

Θεωρούν επίσης ότι στις παρυφές αυτής της περιοχής το νερό μετατρέπεται σε.. χιόνια και πάγους η παρουσία των οποίων επιτρέπει την ταχεία και μαζική δημιουργία χιονόμπαλων, κομητών και διαφόρων άλλων υλικών τα οποία βοηθούν στον σχηματισμό μεγάλων πλανητών αερίων όπως ο Δίας και ο Κρόνος.

Παλαιότερα άρθρα:

132 απαντήσεις στο “Εντοπίστηκαν χιόνια σε ένα… άστρο!”

  1. The new Zune browser is surprisingly good, but not as good as the iPods. It works well, but isnt as fast as Safari, and has a clunkier interface. If you occasionally plan on using the web browser thats not an issue, but if youre planning to browse the web alot from your PMP then the iPods larger screen and better browser may be important.

  2. When I initially left a comment I appear to have clicked on the -Notify me when new comments are added- checkbox and from now on whenever a comment is added I get 4 emails with the same comment. Perhaps there is a way you can remove me from that service? Cheers.

  3. Along with everything that seems to be developing throughout this particular subject matter, your viewpoints tend to be rather exciting. However, I appologize, because I can not give credence to your entire idea, all be it exhilarating none the less. It seems to me that your remarks are actually not totally rationalized and in actuality you are generally yourself not really fully certain of the assertion. In any case I did take pleasure in reading it.

  4. I truly wanted to send a simple note to be able to express gratitude to you for those superb tips and hints you are placing at this website. My extensive internet look up has at the end been paid with high-quality facts and techniques to go over with my partners. I ‘d repeat that we visitors actually are definitely lucky to live in a remarkable community with many awesome individuals with good secrets. I feel truly lucky to have come across the webpages and look forward to tons of more brilliant times reading here. Thanks a lot once more for all the details.

  5. hello there and thank you for your information – I’ve definitely picked up something new from right here. I did however expertise several technical points using this site, as I experienced to reload the web site a lot of times previous to I could get it to load correctly. I had been wondering if your web hosting is OK? Not that I am complaining, but slow loading instances times will very frequently affect your placement in google and could damage your high quality score if advertising and marketing with Adwords. Well I am adding this RSS to my e-mail and could look out for much more of your respective fascinating content. Make sure you update this again soon..

  6. Unquestionably believe that which you stated. Your favorite reason appeared to be on the internet the simplest thing to be aware of. I say to you, I definitely get annoyed while people consider worries that they just do not know about. You managed to hit the nail upon the top and defined out the whole thing without having side-effects , people could take a signal. Will likely be back to get more. Thanks

  7. Thank you for the sensible critique. Me and my neighbor were just preparing to do a little research on this. We got a grab a book from our area library but I think I learned more from this post. I am very glad to see such excellent info being shared freely out there.

  8. Excellent beat ! I would like to apprentice while you amend your website, how could i subscribe for a blog web site? The account aided me a acceptable deal. I had been a little bit acquainted of this your broadcast provided bright clear idea

  9. This design is incredible! You most certainly know how to keep a reader entertained. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Wonderful job. I really enjoyed what you had to say, and more than that, how you presented it. Too cool!

  10. Thanks for your posting. I also think laptop computers have gotten more and more popular nowadays, and now in many cases are the only sort of computer used in a household. Simply because at the same time that they are becoming more and more very affordable, their processing power keeps growing to the point where these are as strong as desktop coming from just a few years back.

  11. I’ve been surfing online more than three hours today, yet I never found any interesting article like yours. It’s pretty worth enough for me. In my view, if all website owners and bloggers made good content as you did, the web will be a lot more useful than ever before.

  12. What i do not understood is in truth how you are no longer actually much more neatly-appreciated than you might be right now. You’re so intelligent. You understand thus significantly with regards to this topic, produced me in my opinion imagine it from numerous numerous angles. Its like women and men aren’t involved unless it is something to do with Girl gaga! Your individual stuffs outstanding. At all times take care of it up!|

  13. Appreciating the time and energy you put into your website and in depth information you provide. It’s awesome to come across a blog every once in a while that isn’t the same out of date rehashed information. Great read! I’ve bookmarked your site and I’m adding your RSS feeds to my Google account.

  14. Nice to meet you, I’m Thad. For years I’ve been inevitable California. I am currently a procurement officer and the salary been recently really completing. As a man what I enjoy is to model trains and We are starting another thing along by it. I am running and maintaining a blog here:

  15. It’s perfect time to make some plans for the longer term and it’s time to be happy. I have read this publish and if I may I want to counsel you some interesting issues or suggestions. Perhaps you can write next articles referring to this article. I want to learn more things about it!|

  16. Miss Friel is what’s written for my child birth certificate and she totally digs that logo. His wife doesn’t like it the way he does but what he really likes doing is researching fashion but he can’t help it become his line of work. Supervising has been my profession for valuable time but I plan on changing this tool. My husband and I chose to reside in California. If you want to find out more check out his website: #link#

  17. Howdy! I know this is kinda off topic however I’d figured I’d ask. Would you be interested in exchanging links or maybe guest authoring a blog article or vice-versa? My blog goes over a lot of the same topics as yours and I believe we could greatly benefit from each other. If you’re interested feel free to send me an e-mail. I look forward to hearing from you! Great blog by the way!

  18. “Great article and right to the point. I don’t know if this is in fact the best place to ask but do you folks have any thoughts on where to get some professional writers? Thank you ??”

  19. This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want?HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!

  20. Nice post. I learn something more challenging on different blogs everyday. It will always be stimulating to read content from other writers and practice a little something from their store. I?d prefer to use some with the content on my blog whether you don?t mind. Natually I?ll give you a link on your web blog. Thanks for sharing.

  21. Pretty section of content. I just stumbled upon your weblog and in accession capital to claim that I acquire actually loved account your blog posts. Anyway I’ll be subscribing on your feeds and even I fulfillment you access persistently rapidly.|

  22. An impressive share, I just given this onto a colleague who was doing a little analysis on this. And he in fact bought me breakfast because I found it for him.. smile. So let me reword that: Thnx for the treat! But yeah Thnkx for spending the time to discuss this, I feel strongly about it and love reading more on this topic. If possible, as you become expertise, would you mind updating your blog with more details? It is highly helpful for me. Big thumb up for this blog post!

  23. There are certainly a lot of details like that to take into consideration. That is a great point to bring up. I offer the thoughts above as general inspiration but clearly there are questions like the one you bring up where the most important thing will be working in honest good faith. I don?t know if best practices have emerged around things like that, but I am sure that your job is clearly identified as a fair game. Both boys and girls feel the impact of just a moment?s pleasure, for the rest of their lives.

  24. Hello there! This post could not be written any better! Reading through this post reminds me of my old room mate! He always kept chatting about this. I will forward this write-up to him. Fairly certain he will have a good read. Thanks for sharing!|

  25. This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want?HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!

  26. There are certainly a lot of details like that to take into consideration. That is a great point to bring up. I offer the thoughts above as general inspiration but clearly there are questions like the one you bring up where the most important thing will be working in honest good faith. I don?t know if best practices have emerged around things like that, but I am sure that your job is clearly identified as a fair game. Both boys and girls feel the impact of just a moment?s pleasure, for the rest of their lives.

  27. Basil Gonzales is title people use to phone him and he totally digs that company. My family lives in Puerto Rico and my parents live nearby. Data processing has been my profession for quantities of. I am really fond of to jog and I will be starting something else along going without running shoes. See what’s new on my own website here: #link#

  28. An impressive share, I just given this onto a colleague who was doing a little analysis on this. And he in fact bought me breakfast because I found it for him.. smile. So let me reword that: Thnx for the treat! But yeah Thnkx for spending the time to discuss this, I feel strongly about it and love reading more on this topic. If possible, as you become expertise, would you mind updating your blog with more details? It is highly helpful for me. Big thumb up for this blog post!

  29. I simply couldn’t go away your website prior to suggesting that I really loved the standard information a person supply for your visitors? Is gonna be again incessantly in order to check up on new posts|

  30. Greetings, I do believe your site may be having browser compatibility problems. When I look at your blog in Safari, it looks fine however, if opening in I.E., it’s got some overlapping issues. I simply wanted to give you a quick heads up! Aside from that, wonderful blog!|

  31. The author’s name is Thad Shattuck. Puerto Rico will be the my house and I’ve everything which i need what follows. Data processing is how I make a living. It’s not a common thing but what I like doing is archery having said that i can’t enable my profession really. I’m not good at webdesign we might desire to check my website: #link#

  32. You actually make it seem so easy with your presentation but I find this matter to be really something that I think I would never understand. It seems too complicated and very broad for me. I’m looking forward for your next post, I will try to get the hang of it!|

  33. I really like your blog.. very nice colors & theme. Did you design this website yourself or did you hire someone to do it for you? Plz respond as I’m looking to design my own blog and would like to know where u got this from. kudos|

  34. First of all I would like to say awesome blog! I had a quick question that I’d like to ask if you don’t mind. I was interested to know how you center yourself and clear your mind prior to writing. I have had a hard time clearing my thoughts in getting my thoughts out there. I truly do take pleasure in writing however it just seems like the first 10 to 15 minutes tend to be wasted simply just trying to figure out how to begin. Any ideas or hints? Thank you!|

  35. I just want to tell you that I’m beginner to blogging and really loved this web-site. Most likely I’m likely to bookmark your site . You certainly come with terrific stories. Kudos for sharing with us your website.

  36. I just want to tell you that I am very new to blogging and honestly liked your page. Probably I’m going to bookmark your blog post . You absolutely have outstanding articles and reviews. With thanks for revealing your blog site.

  37. Greetings! Very helpful advice within this article! It is the little changes that produce the most important changes. Thanks a lot for sharing!|

  38. Hello! Quick question that’s entirely off topic. Do you know how to make your site mobile friendly? My weblog looks weird when viewing from my apple iphone. I’m trying to find a theme or plugin that might be able to resolve this issue. If you have any recommendations, please share. Cheers!|

  39. Hello I am so happy I found your weblog, I really found you by accident, while I was browsing on Bing for something else, Anyhow I am here now and would just like to say thanks for a fantastic post and a all round interesting blog (I also love the theme/design), I don’t have time to look over it all at the minute but I have bookmarked it and also added your RSS feeds, so when I have time I will be back to read a lot more, Please do keep up the superb job.|

  40. Very great post. I just stumbled upon your blog and wanted to mention that I have really enjoyed browsing your blog posts. After all I’ll be subscribing in your rss feed and I hope you write again very soon!|

  41. The author’s name is Thad Shattuck. It’s not a common thing but what Favor doing is archery nonetheless can’t causes it to be my profession really. Puerto Rico will be the my house is and I’ve everything my partner and i need suitable. Data processing is how I make a living. I’m not good at webdesign anyone might to be able to check my website: #link#

  42. Pretty part of content. I just stumbled upon your site and in accession capital to claim that I acquire actually enjoyed account your weblog posts. Anyway I’ll be subscribing in your feeds and even I success you get admission to persistently quickly.|

  43. Hey there are using WordPress for your site platform? I’m new to the blog world but I’m trying to get started and set up my own. Do you require any coding knowledge to make your own blog? Any help would be really appreciated!|

  44. I loved as much as you’ll receive carried out right here. The sketch is tasteful, your authored material stylish. nonetheless, you command get got an shakiness over that you wish be delivering the following. unwell unquestionably come more formerly again since exactly the same nearly a lot often inside case you shield this increase.|

  45. Unquestionably believe that which you stated. Your favorite justification seemed to be on the net the easiest thing to be aware of. I say to you, I certainly get irked while people consider worries that they plainly do not know about. You managed to hit the nail upon the top and defined out the whole thing without having side effect , people could take a signal. Will likely be back to get more. Thanks|

Σχολιάστε