Questions with the keyword 'astronomer'

• How can astronomers know things for certain since they only look at space from one vantage point? by Mason The Amazing :) to Andrew, Hina, Ian, Kathryn, Leah-Nani, Xu Comments: (No comments so far )
• Have astronomers ever observed a violet shift like they have blue shifts and red shifts? by Mason The Amazing :) to Andrew, Hina, Ian, Kathryn, Leah-Nani, Xu Comments: (No comments so far )