Astronomy 2 Articles

Today you will read 2 Astronomy-related articles, and answer a few questions about both of them in your blog.

Here are the articles (pick any 2):

• Scientists Pinpoint the 'Edge of Space'
• Saturn's Moon Titan May Have Subsurface Ocean of Hydrocarbons
• Cool Stars Have Different Mix of Life-Forming Chemicals
• Finding Twin Earth is Harder Than Thought

Here are the questions (answer all of these for both articles):
1. Which article did you read?
2. When was it published?
3. What are 3 things you learned?
4. What are 2 things you found interesting?
5. What is 1 question you still have?