NASA | Fermi Provides New Insights on Dark Matter

The video explores the mystery of dark matter, which is invisible yet crucial to understanding cosmic structures. It discusses how dark matter outnumbers ordinary matter and may consist of undiscovered subatomic particles like WIMPs. NASA's Fermi Gamma Ray Space Telescope plays a key role in searching for gamma rays from dark matter annihilation, particularly in dwarf spheroidal galaxies. Despite extensive data, no gamma rays have been detected, narrowing the possibilities for WIMP-based dark matter. The video highlights the importance of continued research and the discovery of new dwarf galaxies to enhance our understanding of dark matter.

What is the ratio of dark matter to ordinary matter according to NASA's WMAP findings?

• 10:1

• 4:1

• 2:1

• 1:1

What is the primary role of NASA's Fermi Gamma Ray Space Telescope in the study of dark matter?

• To measure the temperature of stars

• To detect gamma rays from dark matter annihilation

• To study the cosmic microwave background

• To map the distribution of galaxies

Why are dwarf spheroidal galaxies significant in the search for dark matter?

• They contain no dark matter

• They are the largest galaxies in the universe

• They are the brightest galaxies

• They have high amounts of dark matter and lack gamma ray-emitting objects

What did Fermi scientists find when they analyzed data from 10 dwarf galaxies?

• A new form of ordinary matter

• No sign of gamma rays from WIMP annihilation

• Evidence of gamma rays from WIMP annihilation

• A new type of star

How does the discovery of new dwarf galaxies impact the search for dark matter?

• It makes the search less sensitive

• It has no impact

• It makes the search more sensitive

• It complicates the search