Could You Ace A College Astronomy Test?
Question 14 out of 29

14. Who was the first to predict the existence of black holes?
Isaac Newton Albert Einstein Stephen Hawking Carl Sagan ▶ Next Question ◀

Can We Guess Your Favorite Childhood Toy?
Can We Guess Your Favorite Childhood Toy?
Are You Rock, Paper, Or Scissors?
Are You Rock, Paper, Or Scissors?
Can We Guess Your True Birth Month?
Can We Guess Your True Birth Month?
Would I Be A Good Girlfriend?
Would I Be A Good Girlfriend?
How Close Are You And Your Sister?
How Close Are You And Your Sister?
Which Of Your Dreams Will Come True?
Which Of Your Dreams Will Come True?
Left Brain Right Brain Test
Left Brain Right Brain Test
What Do Guys Like About You?
What Do Guys Like About You?
96% Of Americans Cannot Name These Animals, Can You?
96% Of Americans Cannot Name These Animals, Can You?
What Do Your Dreams Say About You?
What Do Your Dreams Say About You?
Which Presidential Candidate Are You Most Like?
Which Presidential Candidate Are You Most Like?
Which Lucille Ball Personality Should You Be For Halloween?
Which Lucille Ball Personality Should You Be For Halloween?