Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

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Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method arrays::explode_key() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_entry.php on line 254
Stefan's Blog - Unika bilder av okända planeter

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method arrays::explode_key() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_entry.php on line 254

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::file_listing() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 29

Strict Standards: Non-static method fileio::file_listing() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 29

Strict Standards: Non-static method fileio::file_listing() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 29

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::read_file() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 13

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41

Strict Standards: Non-static method fileio::strip_extension() should not be called statically in /www/htdocs/sgraman/blog/scripts/sb_fileio.php on line 41
Unika bilder av okända planeter 
För första gången har forskare lyckats fotografera en hel grupp planeter i ett annat solsystem. Planeterna är mycket stora men har ändå likheter med himlakropparna i vårt eget solsystem. Det är med hjälp av två stora teleskop på Hawaii som forskarna gjort sin upptäckt. På en och samma bild kan tre planeter ses kretsa runt stjärnan HR 8799 som befinner sig på ett avstånd av 128 ljusår från jorden.

HR 8799 återfinns i stjärnbilden Pegasus och kan ses med blotta ögat om rätt förhållanden råder. Den är, en mycket ung stjärna "i sina bästa år" och skiner betydligt starkare än solen. De tre planeterna har en massa 5 till 13 gånger större än massan hos Jupiter, den största planeten i vårt eget solsystem. De bildades sannolikt för bara 60 miljoner år sedan, vilket innebär att de är nyfödda i jämförelse med exempelvis jorden som är drygt fyra miljarder år gammal. På grund av sin ungdom glöder de fortfarande av hettan som finns kvar efter deras födelse.

På många sätt skiljer de sig alltså markant från planeterna som kretsar runt solen. Men intressant nog har de en likartad placering, med den minsta av dem närmast HR 8799 och den största längst bort – precis som här hemma där dvärgarna Merkurius, Venus, Jorden och Mars är nära solen medan jättarna Jupiter, Saturnus, Uranus och Neptunus ligger i bana mycket längre bort. Spännande, spännande...




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