📚 Practice Mode

Catalogs of Infrared Sources

Learn at your own pace with hints and detailed explanations

1 / 8
Multiple Choice

What is the primary purpose of the 2MASS catalog?

  1. To provide accurate positions and magnitudes of stars in the Milky Way.
  2. To identify and characterize infrared sources in the sky.
  3. To measure the distances to nearby galaxies.
  4. To study the properties of active galactic nuclei.
Change Mode