NASA | GLASTcast | Episode 1: What is GLAST?

The video explores the dynamic nature of the universe through gamma rays, revealing violent phenomena and high-energy events. It emphasizes the importance of observing the entire electromagnetic spectrum to understand the universe's formation and evolution. Gamma ray telescopes are highlighted for their role in studying high-energy photons, potentially leading to discoveries about active galactic nuclei, pulsars, supermassive black holes, and dark matter. The video concludes with the promise of new discoveries as we explore new wavelength regions.

What does observing the universe through gamma rays reveal?

• A calm and unchanging universe

• A universe full of violent phenomena

• A universe that is shrinking

• A universe with no light

Why is it important to observe the universe across the electromagnetic spectrum?

• To understand the universe's formation and evolution

• To focus on low-energy photons

• To see only visible light

• To avoid gamma rays

What is the purpose of gamma ray telescopes like Blast?

• To study low-energy photons

• To observe the sun

• To study the highest energy photons in the universe

• To detect sound waves

Which of the following is NOT a phenomenon that Blast might study?

• Ocean currents

• Active galactic nuclei

• Pulsars

• Supermassive black holes

What often happens when a new wavelength region is explored?

• New and surprising discoveries are made

• The universe stops expanding

• The universe becomes smaller

• Nothing new is discovered