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Cards
Cards
astronomers
Definition
scientists who study the universe
Sentence
Astronomers have lately been debating the existence of certain stars.
Image
collapse
Definition
fall down suddenly from weakness
Sentence
The gravitational collapse of a star is also called the death of a star.
collide
Definition
to crash together forcefully
Sentence
We are hopeful that no large meteors will collide near the earth.
Image
Synonym
crash
Word_Families
collides, collided, colliding
compact
Definition
small and tight
Sentence
The space shuttle is very compact but functional.
Synonym
tight
Antonym
open
galaxy
Definition
a large group of stars and planets
Sentence
The Solar System is located in the Milky Way Galaxy.
Image
particles
Definition
very small bits
Sentence
Particles of lunar dust were brought home to Earth by astronauts on several space expeditions.
Synonym
pieces