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Letter B

B is for …

Check out what B stands for …

Biologist
Black Hole
Boosters

Biologist

A scientist who studies plant and animal life.

A plant biologist measures radish plants in a lab
A plant biologist measures radish plants that were grown in a NASA lab. Someday astronauts may grow plants in space.
NASA

Sentences:
Biologists at NASA study what happens to the human body in space.
Marine biologists study things that live in the oceans.

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Black Hole

An invisible object in space formed when a massive star collapses from its own gravity. A black hole has such a strong pull of gravity that not even light can escape from a black hole.

Drawing of a black hole
A black hole swallows anything near it, including light.
NASA

Sentence:
Any star or other object that moves close to a black hole will be pulled inside it.

Related Links:
What is a Black Hole? (Grades K-4)
What Is a Black Hole? (Grades 5-8)

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Boosters

Engines or motors that give extra power to a rocket.

Boosters falling off a rocket in space
This drawing shows boosters falling off NASA’s Space Launch System.
NASA

Sentences:
The two solid rocket boosters will give the Space Launch System the power to launch.
The Delta II (2) rocket uses nine solid rocket boosters to lift it into space.

Related Links:
Drawing of a Solid Rocket Booster

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Explore More Letters

Go Back to NASA's Picture Dictionary

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