Our Place in the Universe Really just our
- Slides: 12
Our Place in the Universe Really just our place in our galaxy.
Ancient Astronomers • The earth is the center of the universe. • The universe consists of the solar system.
The Copernican Revolution • The sun is the center of the universe. • The universe consists of the solar system and surrounding stars. Creative Commons
1800’s: Herschel and Kapteyn • The solar system is the center of the universe. • The universe consists of the Milky Way galaxy. Sun at center All images
Our galaxy so far… Our galaxy is a disk shape with the sun at the center. Sun
Harlow Shapley • Used the distribution of and distance to globular clusters to determine the shape of the galaxy Sun is off-center • Globular clusters: gravitationally bound group of tens of thousands of very old stars
Our galaxy so far… Our galaxy is a disk shape, with the sun off-center, surrounded by a halo of globular clusters. Sun
Central Bulge • When observed using infrared light, there is a bright area of the sky in the direction of the center of our galaxy. • Infrared light can travel past the dust in the disk. • Central bulges are found in most other diskshaped galaxies. Above: Atlas Image courtesy of 2 MASS/UMass/IPAC-Caltech/NASA/NSF NASA, ESA, and the Hubble Heritage (STSc. I/AURA)ESA/Hubble Collaboration
Our galaxy so far… Our galaxy is a disk shape, with the sun off-center, a central bulge and is surrounded by a halo of globular clusters. Sun
Spiral Arms Using radio waves (a type of EM radiation), clouds of hydrogen can be found to lie along bands or arms in our galaxy. Creative Commons
Our Place in the Universe Activity
- Did paris love juliet give evidence to support your answer
- Disturbance that transfers energy from place to place
- Place place value and period
- A disturbance that transfers energy
- If we confess our sins
- đại từ thay thế
- Vẽ hình chiếu đứng bằng cạnh của vật thể
- Tư thế worm breton
- Quá trình desamine hóa có thể tạo ra
- Cong thức tính động năng
- Thế nào là mạng điện lắp đặt kiểu nổi
- Sự nuôi và dạy con của hươu
- Các châu lục và đại dương trên thế giới