While searching for rocks in Mercury, Cosmo and Dad relax, but when night comes, Dad's suit is frozen, and Cosmo must find a way to warm him up.
When GIL crashes, Cosmo and her family go on a camping holiday on Venus, with terrible weather like acid rain.
Mum gives Cosmo and Dad a task to get some rocks from the top of The Olympus Mons on Mars, promoting Dad to climb it.
When Mum misses the clouds, Cosmo, Dad, and Sol go to Jupiter to make a surprise for her.
When the freezer breaks, Cosmo, Dad, and Sol go to Saturn to get some ice from Saturn's ring.
When Sol is afraid of the dark and unable to sleep, Cosmo and Dad take him to Uranus to help him.
After Dad ruins Mum's experiment, Cosmo and her family go to Neptune to finish the experiment quicker, also they ice skate to pass the time.
Cosmo, Dad and Sol visit Earth to go for a swim in the ocean.
To study the Sun, Mum needs Cosmo and Dad to set up three solar units on Mercury. Dad and Lifter find themselves in a race across Mercury, but Cosmo finds that they will have to work together if they are to make their way over the many craters on Mercury's surface.
Dad want to try the woolly jumpers he made for the family, but soon doesn't need them when he, Cosmo, Sol, GIL, and Lifter discover about Venus's atmosphere and its clouds.
Cosmo, Dad and GIL go to Mars to look for water, but a red dust storm Interferes the mission.
When Mum gets a storm machine, the family goes to Jupiter for a test drive, where a storm is in progress.
Cosmo and Dad go to Saturn to follow the meteors into Saturn's cloudy atmosphere by using their Starpods, where they see a wonderful meteor shower.
When dad is in charge of taking care of the Mission Controller's dog, he and Cosmo go to Uranus to take the dog for a space walk.
Dad wants to fly Lifter's kite on Neptune, were there are very strong winds.