forum zespołu muzyki folk Portfolk
Zapraszamy do dyskusji... TO SCOTLAND!!!
FAQ
Szukaj
Użytkownicy
Grupy
Galerie
Rejestracja
Profil
Zaloguj się, by sprawdzić wiadomości
Zaloguj
Forum forum zespołu muzyki folk Portfolk Strona Główna
->
O wszystkim i o niczym
Napisz odpowiedź
Użytkownik
Temat
Treść wiadomości
Emotikony
Więcej Ikon
Kolor:
Domyślny
Ciemnoczerwony
Czerwony
Pomarańćzowy
Brązowy
Żółty
Zielony
Oliwkowy
Błękitny
Niebieski
Ciemnoniebieski
Purpurowy
Fioletowy
Biały
Czarny
Rozmiar:
Minimalny
Mały
Normalny
Duży
Ogromny
Zamknij Tagi
Opcje
HTML:
NIE
BBCode
:
TAK
Uśmieszki:
TAK
Wyłącz BBCode w tym poście
Wyłącz Uśmieszki w tym poście
Kod potwierdzający: *
Wszystkie czasy w strefie EET (Europa)
Skocz do:
Wybierz forum
KATEGORIE
----------------
Koncerty
Doradź nam coś.
Co o nas myślisz?
O wszystkim i o niczym
Przegląd tematu
Autor
Wiadomość
cheapbag214s
Wysłany: Nie 8:56, 17 Lis 2013
Temat postu: Swiss astronomers use smaller telescope
Swiss astronomers use smaller telescope, find new variable star type
GENEVA, Switzerland, June 12 () -- A new type of variable star was discovered by a team of Swiss astronomers from the Geneva Observatory who measured minute variations in stellar brightness.The results are based on measurements of the brightness of more than 3,000 stars in the star cluster NGC 3766 during a seven-year period, TG Daily reported Tuesday.The measurements revealed how 36 of the cluster's stars had tiny regular variations in brightness at 0.1 percent of the stars' normal brightness, researchers said. The astronomers found the variations lasted 2- to 20 hours.The new class of variable stars hasn't been named,[url=http://www.leedpe.com/]christian louboutin pigalle[/url], TG Daily said."We have reached this level of sensitivity thanks to the high quality of the observations, combined with a very careful analysis of the data," research team leader Nami Mowlavi said, "[and] also because we have carried out an extensive observation program that lasted for seven years. It probably wouldn't have been possible to get so much observing time on a bigger telescope."The team used a 1.2-meter telescope.Although the cause of the variability hasn't been determined, researchers said some of the stars seem to rotate very fast, spinning at speeds more than half of their critical velocity, where stars become unstable and cast material into space, TG Daily said."The very existence of this new class of variable stars is a challenge to astrophysicists," team member Sophie Saesen said. "Current theoretical models predict that their light is not supposed to vary periodically at all, so our current efforts are focused on finding out more about the behavior of this strange new type of star."
fora.pl
- załóż własne forum dyskusyjne za darmo
Powered by
phpBB
© 2001 phpBB Group
Chronicles phpBB2 theme by
Jakob Persson
(
http://www.eddingschronicles.com
). Stone textures by
Patty Herford
.
Regulamin