Quasars are...
*
1 point
Areas with high activity in the centers of new galaxies
Gas Giant planets like Jupiter, but in other solar systems
Rocky planets like Earth or Mars, but in other solar systems
A pair of stars that are orbiting each other, so their spectrum keeps changing

A quasar is an extremely luminous active galactic nucleus, powered by a supermassive black hole, with mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc.

Explanation:

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Quasars are... * 1 point Areas with high activity in the centers of new galaxies Gas Giant planets like Jupiter, but in other solar systems Rocky planets like Earth or Mars, but in other solar systems A pair of stars that are orbiting each other, so their spectrum keeps changing

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Quasars are...
*
1 point
Areas with high activity in the centers of new galaxies
Gas Giant planets like Jupiter, but in other solar systems
Rocky planets like Earth or Mars, but in other solar systems
A pair of stars that are orbiting each other, so their spectrum keeps changing