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What astronomical object emerges sometimes from supernova instead of a black hole?

Magnetar

Blazar

Quasar

only a black hole can emerge from supernova

A magnetar is a type of neutron star with an extremely powerful magnetic field. The magnetic field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays. As of March 2016, only 23 magnetars are known, with six more candidates awaiting confirmation.

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5

European Southern Observatory wikipedia → Magnetar

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Which astronomical discovery was nicknamed 'Little Green Man'?

This is the aurora of Jupiter. What are the visible bright spots caused by?

atmospheric storms

multiple magnetic poles of Jupiter

This unique line of about 20 stars is known as ...

Kemble's cascade

Who is that?

Vincent Pastore