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?

How does spectroscopy help in understanding the physical state of celestial objects?

What significant advancements does COS provide compared to previous instruments?

Describe the role of intergalactic gas in the study of the universe.

What was the function of Co-star in relation to the Hubble Space Telescope?