Sun.

SWIMS.

To the horse-pital.

Opportunity.

There are several answers.

One potential answer is: 31 quarters, 21 dimes, 3 nickels, and 0 pennies.

Pi (3.1415...)

6=3
7=5

Because the numbers to the right are the number of letters in the number words.

Today.

59.

Let the number is N which when divide by 3,4 , 5 leaves reminder It means N+1 should divide by 3, 4 and 5
If the number is completely divide means it should be multiple of 3,4, and 5
N + 1 = 3 x 4 x 5 = 60
N = 60 - 1 = 59

Space.

Because it ran out of juice.

Snowflakes.