Polvo cósmico

Space dust, often fine like smoke, forms from exploding stars or colliding bodies. Over time, it recycles into new stars and solar systems. Previously a nuisance for astronomers, it obscured views of stars and galaxies. However, modern infrared astronomy now reveals details beyond these dust clouds.

What is the appearance of cosmic dust in outer space?

• It looks like liquid water.

• It appears as bright stars.

• It resembles smoke.

• It looks like solid rocks.

How is cosmic dust formed?

• Through volcanic eruptions.

• By the cooling of planets.

• From star explosions or rocky body collisions.

• By the evaporation of comets.

What happens to cosmic dust over time?

• It disappears into black holes.

• It forms new stars and solar systems.

• It turns into asteroids.

• It becomes part of the Earth's atmosphere.

Why was cosmic dust a problem for astronomers in the past?

• It blocked the view of stars and galaxies.

• It caused telescopes to malfunction.

• It interfered with radio signals.

• It made space travel difficult.

How has modern infrared astronomy helped astronomers?

• By allowing them to see through dust clouds.

• By eliminating cosmic dust.

• By reducing the size of telescopes.

• By increasing the speed of light.