DEAN: THE PLANETS MERCURY, VENUS, EARTH, AND
MARS HAVE A FEW THINGS IN COMMON.

JAMES: THEY'RE ALL ROUND, ROCKY OBJECTS THAT
CIRCLE THE SUN AND YOU CAN SEE THEM THIS WEEK.

DEAN: WE HAVE OUR SKY SET TO DECEMBER 15 AT
ABOUT 5:45PM.

LOW ABOVE THE SOUTHWEST HORIZON, YOU MIGHT
BE ABLE TO MAKE OUT THE PLANET MERCURY.

JAMES: HIGHER UP IN THE SOUTHWEST IS THE DAZZLINGLY-BRIGHT
PLANET VENUS AND HIGHER STILL AND OVER TO

THE LEFT IS THE RED PLANET MARS.

JAMES: THIS IS HOW MERCURY, VENUS, EARTH,
AND MARS REVOLVE AROUND THE SUN.

DEAN: MERCURY IS THE CLOSEST TO THE SUN AND
MOVES THE FASTEST.

VENUS IS SECOND, EARTH IS THIRD, AND MARS
IS FOURTH.

JAMES: THE DISTANCE FROM THE SUN DETERMINES
HOW FAST A PLANET WILL MOVE AND HOW LONG IT

TAKES TO MAKE ONE TRIP AROUND THE SUN.

THAT'S ITS YEAR.

DEAN: BUT DONT SPEND ANOTHER YEAR ON EARTH
WITHOUT SEEING THE OTHER PLANETS.

SO

BOTH: KEEP LOOKING UP!