Question

the solar system and nearby stars are part of a much larger structure, the milky way galaxy. the milky way, like many other galaxies, contains billions of stars and planetary systems. these objects orbit around the galaxy’s center, a supermassive black hole over four million times as massive as the sun! this black hole has an extremely strong gravitational influence, even on objects that are incredibly far away. the sun and the rest of the solar system orbit the milky way’s center from over 25,000 light - years away.
the immense gravity of the milky way’s central black hole, as well as gravitational attractions between massive objects within the milky way, help hold the entire galaxy together.
select the true statements.

• the center of the milky way galaxy orbits the solar system.
• there is a supermassive black hole at the center of the milky way galaxy.
• billions of stars and planetary systems are part of the milky way galaxy.
• the milky way galaxy is held together by gravitational forces.

Explanation:

• Para la primera afirmación: El texto dice que el Sol y el sistema solar orbitan alrededor del centro de la Vía Láctea, no al revés. Así que esta es falsa.
• Para la segunda afirmación: El texto menciona "a supermassive black hole over four million times as massive as the Sun" en el centro de la Vía Láctea, así que es verdadera.
• Para la tercera afirmación: El texto dice "The Milky Way, like many other galaxies, contains billions of stars and planetary systems", así que es verdadera.
• Para la cuarta afirmación: El texto dice "The immense gravity of the Milky Way’s central black hole, as well as gravitational attractions between massive objects within the Milky Way, help hold the entire galaxy together", así que es verdadera.

Answer:

B. There is a supermassive black hole at the center of the Milky Way galaxy.
C. Billions of stars and planetary systems are part of the Milky Way galaxy.
D. The Milky Way galaxy is held together by gravitational forces.