NASA | Hubble's Cosmic Origins Spectrograph

The video discusses the Cosmic Origins Spectrograph (COS), highlighting its sensitivity and importance in astrophysics. COS, developed in the 1990s, helps study the cosmic web and intergalactic medium, providing insights into the universe's history. Spectroscopy, a key technique, analyzes light to determine the composition and properties of celestial objects. The video also explains the transition from Co-star to COS in the Hubble Space Telescope, emphasizing the advancements in correcting optical errors.

What is the primary purpose of the COS spectroscope?

• To measure the temperature of stars

• To study the cosmic web and large-scale structures

• To capture beautiful images of space

• To analyze the surface of planets

How does a spectrograph help in understanding the composition of an object?

• By measuring the object's temperature

• By analyzing the object's gravitational pull

• By capturing images of the object

• By breaking light into different colors

What information can be inferred by analyzing the absorption notches in a spectrum?

• The object's size

• The physical state of a cloud

• The object's color

• The object's distance from Earth

What does the intergalactic medium reveal about the universe?

• The age of the universe

• The history and formation of galaxies

• The temperature of stars

• The distance between galaxies

Why is the Co-star slot available for COS in the HST?

• Co-star was never used

• Co-star was damaged

• Co-star is outdated and not needed anymore

• Co-star was moved to another telescope