Why did Sirius Black betray the Potters?

The answer is that Sirius wanted to deflect attention from the real Secret-Keeper. He probably hoped Voldemort would go after him so he could steer attention away from Pettigrew.

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Is Sirius the brightest star?

Sirius, also called Alpha Canis Majoris or the Dog Star, brightest star in the night sky, with apparent visual magnitude ?1.46. Is Sirius moving towards Earth? Sirius is slowly moving closer to Earth and will gradually increase in brightness over the next 60,000 years, before it starts to recede. It will, however, remain the brightest star seen from Earth for the next 210,000 years.

Consequently, is rita skeeter an animagus?

The sensationalist Daily Prophet reporter whom Dumbledore had banned from Hogwarts grounds managed somehow to wheedle her way back in by changing into her illegal Animagus form: that of a nasty little beetle. Why did Sirius not become a werewolf? Because he was in his dog form while fighting with Remus. In order to protect Harry, Ron, and Hermione from Lupin, Sirius turned back into a dog. Werwolf can turn a human into a werewolf by biting them, but not animals. They were only dangerous to humans.

How are Sirius and Bellatrix related?

Bellatrix is a member of the Black Family and is the cousin of Sirius Black. Bellatrix is the daughter of Cygnus and Druella Black and sister to Andromeda (mother of Nymphadora Tonks) and Narcissa (mother of Draco Malfoy). Correspondingly, is sirius brighter than the sun? As seen from Earth, Sirius is the brightest object in the night sky. Sirius has a luminosity 25.4 times greater than the sun, but, because it is 8.6 light years away, its apparent brightness is 12 billion times less than that of the sun.