Chapter #1 Flashcards
The way scientist know that a hypothesis in astronomy is a reasonable description of nature is to
do experiments and observations about the predictions of the hypothesis
A light year is
the distance that light travels in one year
A star is 230mlight years away. The light we see tonight from that star left it
230 years ago
The location of the Earth in the Milky Way Galaxy is
a little less than 30,000 LY from the center
Which of the following is the Earth Not located in?
We are all located
The natural object (not one that humans built) in space that’s closest to Earth is
The Moon
The Astronomical Unit (AU) as defined by astronomers is
the average distance between the Earth and the Sun
The laws of nature (as determined by scientists)
are constructed from many observations, hypotheses, and experiments
A large body in space that consistently makes it own light (instead of merely reflecting another body’s light) is called.
A star
