What Surprised Scientists to Learn About Mercury from MESSENGER's Data

question 63

Multiple Choice

What surprised scientists to learn about Mercury from MESSENGER's data?

• A) Mercury is still geologically active with molten lava flows on the surface.
• B) Mercury does have an atmosphere causing some erosion of the surface.
• C) Mercury has significantly more craters than the Moon.
• D) Mercury has a magnetic field despite its size.
• E) Mercury is rotating faster than earlier predicted.

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Definitions:

Foetal Stage

The developmental period in humans from nine weeks after conception until birth, marked by rapid growth and maturation of bodily structures.

Germinal Stage

The initial stage of human development lasting from conception to two weeks, characterized by rapid cell division and the beginning of cell differentiation.

Embryonic Stage

A period in prenatal development between the second and eighth weeks after fertilization, where significant growth and differentiation of the embryo occur.

Embryonic Stage

A phase of prenatal development that occurs from implantation through the eighth week of pregnancy, characterized by rapid growth and formation of major structures.