I would try to implement Space Week in the classroom while integrating as many Curricular areas as possible.
Some suggestions of activities that I think would be very effective in the younger classes would be
Having a space area in the room with vocabulary, pictures etc.
If the class use Aistear then you could tie in the theme of Space for the week in the Role play, construction, Art area,
Make a Space Passport- I think this is a lovely idea for the infant classes
Design a 2d shape alien- integration with maths
Drama- Act out a space walk- stimulus watching Neil Armstrong taking the first steps on the moon on You Tube
Visual Arts- Design your own rockets using foam sheets and use paper and tinfoil to make the planets and the stars
English- Read the story “Back to Earth with a bump” and discuss
Music- The planets song- Five little men in a flying saucer
Make Alien Slime using cornflour and conditioner.