While aspiring space traveler and adult film actress Coco Brown promised not to make porn movies while in space, it apparently excludes naughty posts in cyber space, particularly her Twitter account.

One example is her tweet on Jan 31 which was accompanied by a photo showing Coco and a man beside her. The tweet said, "OMG, he tried to put his fingers in special place. Hahaha. Good I wore undies!:-)."

However, most of her recent tweets referred to her ongoing space training in The Netherlands, including a blog written by Richard Connelly in the Houston Press blog that pointed out Coco's Dutch links.

"Coco has specialized in European films the last few years such as Coco's Saug-Service," which based on a web translator indicated the flick featured oral sex. Connelly even speculated that if Coco would break her promise and make porno films in space, the past, present and future names of NASA missions would provide a good source of titles.

He cited NASA's Lunar Atmosphere and Dust Environment Explorer, which when abbreviated to LADEE and given an exclamation point would make a perfect DVD cover guaranteed to be a porn hit. Another is the Coupled Ion Neutral Dynamic Investigation, or CINDI, which sounds like a perfect name for a porn star.

The agency's Gestationary Operational Environmental Satellite has the acronym GOES-N which also has porn connotations. A fourth suggestive title is NASA's Deep Impact, which when applied to porn language refers to another kind of plowing, not of the comet variety.

Coco, in her Jan 25 tweet, admitted being a bit scared with her forthcoming space adventure as she travels 338,000 feet into space. The launch will have only 100 passengers and Coco disclosed that she was number 71 on the list.

She reportedly paid $100,000 to join the trip which is a rather big amount, but considering that porn stars earn quite well, she could afford the fee, although Coco is not in the top 10 list of highest-earning porn star.

Smackjuice.com lists the following as the top female earners in the adult film industry and their estimated net worth:

1. Jenna Jameson - $30 million

2. Tera Patrick - $15 million

3. Jesse Jane - $8 million

4. Traci Lords - $7 million

5. Bree Olson - $5 million

6. Katie Morgan - $4.5 million

7. Jenna Haze - $3.5 million

8. Sasha Grey - $2.5 million

9. Gianna Michaels - $2 million

10. Belladona - $1.8 million