Are Globular Clusters In The Milky Way? There are about 150 known globular clusters in the Milky Way galaxy, according to Georgia State University’s HyperPhysics website. Most are estimated to be at least 10 billion years old, and contain some of the oldest stars in the galaxy. Are globular clusters part of the Milky Way?
What Property Of Galaxy Clusters Mass Makes Them Important For Dark Matter Research? Galaxy clusters, which consist of thousands of galaxies, are important for exploring dark matter because they reside in a region where such matter is much denser than average. Scientists believe that the heavier a cluster is, the more dark matter it has
How Old Is Polaris? Observation data Epoch J2000 Equinox Metallicity 112% solar Rotation 119 days Rotational velocity (v sin i) 14 km/s Age70 Myr Is Polaris a red giant? Polaris appears dim to us only because of its immense distance from Earth. In reality, the star is a behemoth — a yellow supergiant that’s in
How Old Is The Oldest Globular Star Cluster? NGC 121 is around 10 billion years old, making it the oldest cluster in its galaxy; all of the SMC’s other globular clusters are 8 billion years old or younger. How old is the oldest star cluster? Astronomers Have Found One of The Universe’s Oldest Star Clusters
What Type Of Spectrum Is Used To Determine The Composition Of A Star? Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object’s spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other
Which Of These Star Clusters Is Oldest? A team of astronomers using the Gemini-South telescope has discovered one of the oldest stellar clusters in the Milky Way. The team’s results date the globular cluster, named HP 1, at about 12.8 billion years, making its stars among the oldest ever found in our Galaxy. Which star
Which 4 Properties Does The HR Diagram Used To Classify Stars? Characteristics used to classify stars include color, temperature, size, composition, and brightness . Stars vary in their chemical composition. Astronomers use spectrographs to determine the elements found in stars. What are the 4 characteristics of stars on the HR diagram? A star can be
How Do You Identify A Star Pattern? The best way to learn them all is to observe throughout the year and study the individual stars in each constellation. To identify the constellations, most observers use star charts, which can be found online and in astronomy books. Others use planetarium software such as Stellarium or an
What Are Star Clusters Called? Star cluster, either of two general types of stellar assemblages held together by the mutual gravitational attraction of its members, which are physically related through common origin. The two types are open (formerly called galactic) clusters and globular clusters. What is a distinct star cluster called? Star clusters are groups
What Are The Three Types Of Star Clusters? There are three types of star clusters: globular, open, and associations. How many stars are in a cluster? Globular clusters contain several thousand to one million stars in spherical, gravitationally-bound system. Located mostly in the halo surrounding the galactic plane they comprise the oldest stars in the