Oumuamua likely came from a Pluto-like exoplanet

Omamua, an extrasolar object first observed in Hawaii, resembles a comet but is unique enough to spark speculation about its nature, including theories of it being an alien spacecraft. Arizona State University astronomers suggest it is made of frozen nitrogen, similar to Pluto and Triton's surfaces, likely ejected from a Pluto-like exoplanet. Its shape, akin to a bar of soap, is due to cosmic and solar radiation. Unlike typical comets, Omamua lacks a visible tail. By 2040, as it exits the solar system, it will be significantly flatter.

What was one of the initial speculations about the nature of Omamua?

• It is a piece of an asteroid.

• It is a fragment of a star.

• It is an alien spacecraft.

• It is a new type of comet.

What material is Omamua primarily composed of, according to astronomers?

• Methane

• Frozen nitrogen

• Carbon dioxide

• Water ice

From where do scientists believe Omamua was ejected?

• A nearby galaxy

• A star

• A Pluto-like exoplanet

• A black hole

How does Omamua's behavior differ from that of a typical comet as it approaches the sun?

• It disintegrates completely.

• It speeds up without a visible tail.

• It slows down significantly.

• It produces a visible tail.

What is predicted about Omamua's shape by the time it leaves the solar system?

• It will be completely flat.

• It will be spherical.

• It will be 10 times as wide as it is thick.

• It will have a visible tail.