Astro Physics Flashcards
What was the first atom?
Hydrogen
What is the big bang theory?
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!
When was the solar system created
4.5 B years ago
What are the 2 categories of planets?
Terrestrial and Jovian
What are some characteristics of Terrestrial planets?
No rings
Made of rocky material
Surfaces are solid
Very few moons
Relatively small
Whats the hottest planet?
Venus
What are the differences of Jovian planets, Gas giants and Icegiants?
Gas Giants
Predominantly Helium and Hydrogen
Ice Giants
Rock, ICe, and a mixture of water, methane and amonia.
What are the characteristics of Jovian Plants?
Many moons
Rings systems
Immense in size
No Solid Surface
Cold
What is the Kuiper Belt?
The Kuiper Belt is a ring of icy bodies just outside of Neptune’s orbit. Pluto is the most famous Kuiper Belt Object.
What is the Oort Cloud?
Collection of icy debris
Edge of the solar system
