The visible layer of the sun

A huge eruption on the surface of the sun

The path a body follows as it travels AROUND ANOTHER BODY IN SPACE

A cloud of gas and dust from which bodies in space are formed

The process that provides the sun with its energy

A complete trip along an orbit

The layer of Earth that formed as lighter elements floated to the surface

The spinning of a body ON ITS AXIS

The layer of the Earth above the core

A cooler, dark area of the photosphere

A cloud of gas and dust from which bodies in space are formed

A star's color indicates its

New stars form from:

The Milky Way is a(n)

_______________ is the study of the origin, structure and future of the universe.

What two factors affect the gravitational attraction between two objects?

Early organisms added oxygen to Earth's atmosphere as they made food through ________.

What two opposing forces must stay balanced to keep a nebula from collapsing?

Earth's early continents formed as rocks melted and

What may have caused oceans to form during Earth's second atmosphere?

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