Universe

1. Galaxy

1.1. Extra Galactic Objects

1.1.1. Spiral Galaxy

1.1.1.1. Milky way Galaxy

1.1.1.1.1. Solar System

1.1.2. Lenticular Galaxy

1.1.3. elliptical Galaxy

1.2. Inter Galactic Objects

1.2.1. Stars

1.2.2. Open Clusters

1.2.3. Globular Clustoers

1.2.4. Gas Clouds

2. Study about Universe

2.1. Astronomers

2.1.1. Observation

2.1.2. Data Analysis

2.1.3. Interpretation of New Findings

2.2. Astronomy

2.2.1. Planetary Astronomy

2.2.2. Galactic Cosmology

2.2.3. cosmology Astronomy

2.2.4. High Energy Astronomy

2.2.5. Infrared Astronomy

2.2.6. Radio Astronomy

2.2.7. Celestrial Astronomy

2.2.8. Crotical Astronomy