You can tell a lot about someone from their tweets.

For award-winning scientist Neil deGrasse Tyson, Twitter is where his passion and endless space knowledge radiates in 140 characters or less.

The director of the Hayden Planetarium at the Rose Center for Earth and Space, Tyson, 53, uses the microblogging platform to respond to questions, promote funny videos, and, of course, share topical space-related facts. It’s brilliant and inspiring stuff.

“In twilight this night -- don't miss this show -- find Jupiter, Venus and a thin crescent Moon, all in a row,” Tyson tweeted on Feb. 23 to his 345,000 followers.  

On the occasion of his new new book, Space Chronicles, the Daily Dot decided to make Tyson the first subject of our new weekly column called Worth 1,000 Words.

Each week we will chose one influential Twitter user and generate a custom-word cloud to see what is on a persons mind. Like most word clouds, the bigger the word appears, the more often it has been used in a person’s tweets.

Here’s a look at what other words were used in Tyson’s last 50 tweets or so. It’s a fitting image for a man whose head is always in the clouds.

Photo from Majorie Lipan