A group of three singers or musicians who perform together; a group of three people or things.

Able to. speak and understand two languages; using or expressed in two languages

A series of three novels or movies that are closely related and involve the same characters or themes.

A situation in which you must make a difficult choice.

Different from each other; made up of people or things that are different from each other.

Extremely large; of or relating to astronomy.

A symbol that is used in printed text, sometimes to tell someone to read a note that can be found at the bottom of the page.

A person who travels into outer space in a spacecraft.

A minor planet; one of thousands of small bodies that circle the sun.

A person who studies stars, planets, and other objects in outer space.

There are millions of _____________________ in our solar system.

The first female _______________ was Valentina Tereshkova in 1963.

The telescope revolutionized ___________________ observations.

An ________________ resembles a conventional image of a star.

My science professor is an ______________________.

Have you ever been faced with a tough _____________________________.

Currently, at least one in five children is ___________________________.

The scout group consisted of a very _________________ group of boys of many nationalities.

Jane's mother let her leave school early to see the newest movie in her favorite __________________________.

The three friends remained a tight-knit ____________________ throughout middle and high school.