The scientific study of the origin and evolution of the universe is called
The North Star (Polaris) is useful because:
The North Star (Polaris) is useful because:
Pluto is a
Pluto is a
The universe is currently expanding.
The universe is currently expanding.
The Sun’s outer atmosphere, visible during a total solar ecl…
The Sun’s outer atmosphere, visible during a total solar eclipse, is called the
The path the Sun takes across the sky is called the
The path the Sun takes across the sky is called the
Mars has liquid water lakes on its surface today.
Mars has liquid water lakes on its surface today.
Stars spend most of their lives in the main sequence phase.
Stars spend most of their lives in the main sequence phase.
SETI stands for:
SETI stands for:
Which observation supports the expansion of the universe?
Which observation supports the expansion of the universe?