Vacuum Cleaner
noun
A cleaning (掃除) machine is a vacuum cleaner. Suck that dirt up!
そうじき
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
科学者は、宇宙はある巨大な掃除機だと言うでしょ？だったら、それをカーペットを掃除するのに使ったらいいんじゃない？？
Scientists say that space is one giant vacuum, right? So why don’t we just use that to clean our carpets?