Big Mystery in the Perseus Cluster Quiz

What unexpected discovery did astronomers make in the Perseus Cluster using the Chandra X-ray Observatory?

• A supernova explosion

• A black hole

• An unexplained spectral line

• A new type of galaxy

What was the initial reaction of Esra Bulbul to the discovery of the spectral line?

• She believed it was a detector artifact.

• She was skeptical and conducted further checks.

• She thought it was a known atomic line.

• She immediately accepted it as a new discovery.

Which independent X-ray telescope confirmed the existence of the mysterious spectral line?

• Hubble Space Telescope

• Spitzer Space Telescope

• XMM-Newton

• Kepler Space Telescope

What is one of the potential explanations for the mysterious spectral line?

• A new type of star

• Cosmic rays

• Dark matter

• A solar flare

What future technology is expected to help solve the mystery of the spectral line?

• A new ground-based telescope

• A more powerful radio telescope

• An advanced X-ray telescope called 'ASTRO-H'

• A new infrared observatory