Ariana Grande has `the coolest day` of her life as she dons spacesuit during tour ...
(WorldNews Entertainment)

Ariana Grande documented her Friday tour through NASA`s Johnson Space Center based out of Houston. `Thank you for the coolest day of my life @nasa,` the thank u, next singer, 25, said on Instagram Sunday. `My mind is still processing and devouring every second of what just happened but I can`t wait to share more. What a special day and experience.` During her time at the Johnson Space Center, Grande donned an orange spacesuit, floated in a gravity simulator, toured the state-of-the-art facility and...