1.
is the galaxy
that contains the Earth, the Sun, and the
solar system.
2
is twinkle of
light
3.
is a scientisi
who studies space and the Universe
beyond Earth.
is the
distance that light travels in one year,
about 6 billion miles,
5.
is the branch of
science that studies space.
6.
_remain in a
constant position in the sky, used for
navigation
7.
made up of this
constellation's seven brightest stars, form
a shape that looks like a dipper.
8.
is a very light
gas and one of the most abundant
gases in the Universe.
is a group of
stars in the night sky forming patterns
that look like animals, objects, or
characters.
10.
is to bend
as you move from one medium to
another.
11.
A collection of
billions of stars and other maller held
together by gravity.
12.
A cloud of
dust and gas found in interstellar space.
called "star nurseries" because stars are
created there.
13.
A force that
pulls matter together.
14.
A gas that is
lighter than air.
15.
The
constellation Ursa Minor (Little Bear).
16.
Alarge
constellation in the northem sky, also
called a hunter.
17.
A space
telescope launched into low Earth orbit
in 1990 that have helped scientists to
understand our Universe better.
18. Our planet Earth and the sun
belong to the
galaxy
19.
is the
amount of light that a star radiates.
20.
stars tend to be
redder in color, while hotter stars have
a bluer appearance.
