Star Clusters

What are star clusters?

• Giant clouds of gas and dust where many stars form

• A field where stars turn into supernovas

• A sea of rock and nebulae where stars conversate

Who discovered Star Clusters?

• Edwin Hubble

• Isaac Newton

• Fritz Zwicky

• William Herschel

Star clusters consist of 25-30% helium

• True

• False

What type of Star Cluster is the Most Stable?

• Open

• Globular

• Stellar

Star Clusters and Galaxies are the Same

• True

• False

What are the 2 Differences Between Galaxies and Star Clusters?

• galaxies are bigger

• same formations

• star clusters are bigger

• different formations

What is the biggest star cluster?

• M92

• Omega Centauri

• M22

• Palomar Globular Cluster No. 13.

M92 is the Oldest Star Cluster

• True

• False

How can you tell the age of a star?

• View Main-Sequence and compare to H-R sequence

• There is no technology to know

• Take samples of each star and examine

• Compare temperatures to closer stars

How many Stars do Open Clusters usually have?

• 10-100

• 100-1,000

• 1,000-1,000,000