Discover and read the best of Twitter Threads about #Oort

Most recents (3)

28/08 > #CoVid19 : le variant #Delta provoquerait bien une maladie plus sévère via @lemondefr #LaMethSci
[L’étude à découvrir] 27/08 > Risque d'admission à l'hôpital et de fréquentation des soins d'urgence pour le #SARSCoV2 delta (B.1.617.2) par rapport aux variantes préoccupantes alpha (B.1.1.7) : une étude de cohorte via @TheLancetInfDis #LaMethSci
27/08 > 95% de la surface des océans de la #Terre est en passe de changer pour le pire si nous n'agissons pas maintenant via @ScienceAlert #LaMethSci
Read 9 tweets
#News #Astronomia #Astronomy #Oort #NubeDiOort Novità sulla nube di Oort la culla delle #Comete di lungo periodo #Cometa ! ;) ..… to keep update,rimani informato ! ;)
Non la vedrem mai, visto che ci voglion circa 30.000 anni per raggiung lo strato più esterno.che si trova a 4,5x10^11 Km o :
- 450.000.000.000 Miliardi di Km, men che meno il limite estern che dista 3,03 x 10^13 Km, nell' Immag di Mark Garlic che trovate anche nell'artic. sopra..
Ma dove arriva il nostro sistema solare con i pianeti ?
Per farvi capire ho messo un punto rosso sulla foto, così apprezzerete meglio le distanze .. continua ! Quel puntino giallo al centro é il Sole ! ;)
Read 13 tweets
An incredible 85% of the matter in the #Universe is still “dark” to our eyes. We know it must be there, but don’t know what it is. #DarkMatter thread to follow soon... get ready😎
The first hints for #DarkMatter existence can be traced back in the '30s (#Oort in '32 and #Zwicky in '33), but the problem was not given much attention until the '70s. BUT, what was "the problem"? 1/
(In the picture is the Swiss astronomer Zwicky)
In a nutshell "the problem" was that:
1) if you believed in Newton's laws about gravity
2) and you trusted your data
--> there had to be some "hidden", "dark matter" to explain the data. 2/
Read 7 tweets

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