Cosmic dust

Cosmic dust, often as fine as smoke, is created when stars explode or rocky bodies collide. This dust is recycled into new stars and solar systems. Historically, it posed a challenge for astronomers by obscuring views of stars and galaxies. However, advancements in infrared astronomy now allow us to see details beyond these dust clouds.

What are cosmic dust particles often compared to?

• Sand

• Smoke

• Water droplets

• Pebbles

How is cosmic dust primarily formed?

• When stars explode or rocky bodies collide

• From plant pollen

• By ocean waves

• Through volcanic eruptions

What happens to much of the cosmic dust over time?

• It forms new stars and solar systems

• It turns into water

• It disappears into black holes

• It remains unchanged

What was a major problem for astronomers before the advent of infrared astronomy?

• Limited knowledge of the universe

• Too much light pollution

• Cosmic dust obscuring the view

• Lack of telescopes

What advancement allows astronomers to see beyond dust clouds?

• Radio waves

• Infrared astronomy

• X-ray imaging

• Ultraviolet light