Milky Way Galaxy
Stars that exist within the Milky Way's disk.
What is 100 billion?
This makes it challenging to determine the size and shape of our galaxy.
What is our solar system is located inside the galaxy?
Exists at the center of most galaxies.
What are Black holes?
Hubble's observations about galaxy movement revealed what.
What is the universe is expanding?
Population I stars exist here.
What are they are located in the disk and spiral arms?
Galactic Center of the Milky Way is located here.
What is in the constellation Sagittarius?
The first step in the formation of the Milky Way galaxy.
What is the oldest stars formed in a spherical cloud?
Type of galaxy has no definitive shape pattern.
What are irregular galaxies?
According to current data from the Hubble Space Telescope, the estimated age of the universe is what.
What is 13.8 billion years?
Population II stars are found here.
What is in the halo and bulge?
Diameter of the Milky Way (in light years).
What is 100,000 light-years?
The majority of the Milky Way's mass is contained here.
What is in the halo?
Type of galaxy that is most commonly found in the inner regions of large clusters.
What are Elliptical galaxies?
A highly energetic galactic core
What is an active galactic nucleus (AGN)?
The pulsation period range of Cepheid Variable stars.
What is 1 to 100 days?
Region of the Milky Way contains most of its globular clusters.
What is the halo?
The three main components of the Milky Way galaxy.
What are Nuclear bulge, halo, and disk?
Characteristic that best describes a spiral galaxy.
What is a flat disk with extending arms of stars?
The primary focus of cosmology as a field of study.
What is the study of the universe's nature, origin, and evolution?
Type of variable stars with the same luminosity.
What are RR Lyrae Variable stars?
Recent discovery that has been made about the Milky Way's structure.
What is it has an elongated central bar with spiral arms at the ends?
Stars that exist within the Milky Way's disk.
What is 100 billion?
The approximate size of the Local Group.
What is 10 million light-years across?
The purpose of the Hubble constant.
What is to calculate universe expansion rate?
This distinguishes quasars from ordinary stars.
What is they emit strong radio waves?