Possible Clues:

• Applied science, setting temperature in garden feature
• Music to have a go at after closing time utilises science that's bound to take off
• Produces the hits that are out of this world for those aiming for the stars
• Study of fireworks or salad plants?
• Hobby involving launches
• The science of getting higher?
• High science
• Modern technology provides temperature in part of garden
• Complex science and time put into garden feature
• Science film about extraterrestrial visitor finally shown