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.

Why was cosmic dust considered a nuisance for astronomers?

What advancements in astronomy help to see beyond dust clouds?