Gregory H. Johnson, who is slated to pilot the space shuttle Endeavor when it goes on the STS-134 mission in April, tweeted about the mission, and his commander, Mark Kelly, and his wife, Ariz. shooting victim Congresswoman Gabrielle Giffords.
Johnson thanked his followers for support in the first tweet.
"Thank you all for your support: Gabby, Mark, & our crew. Last week was terrible, horrific. But after one long week, we're in a better place."
In the second tweet, Johnson gave updates on Gabby's condition, referred to his colleague's strength and mentions a proposed back-up plan if Kelly is unable to command the mission.
"Gabby improves daily, Mark is strong, our mission team has already prepared a revised plan and a backup plan if needed. STS134 will succeed."
The outage occurred just as Facebook began debuting several new features, including redesigned brand pages, a new photo section and the ability to go back and forth between different accounts without having to log in and out, reports Mashable.
Numerous Facebook users discovered only a blank white screen when they tried to visit the website.
CenterNetworks reports that Like buttons were not loading.
Currently, Facebook is up and running with the following status message from developers:
"We are currently investigating sitewide issues that will affect Facebook Platform. We apologize for any inconvenience and will post here with updates."
Facebook also tweeted an apology on Twitter:
"Facebook is available again after being down for a brief period. We apologize for the inconvenience."
The outage was caused by the social networking website jumping the gun, with internal prototypes becoming public prematurely.
A Facebook spokesperson wrote CBS News in an e-mail, "For a brief period of time, some internal prototypes were made public to a number of people externally. As a result, we took the site down for a few minutes. It's back up, and we apologize for the inconvenience."
A few years ago it was unfathomable to see anybody over 50 on websites like Friendster and MySpace, but that's becoming a more common sight.
More young people are seeing their parents and grandparents on social networking websites such as Twitter and Facebook, reports CNN.
In fact, the rate of people over 50 interacting on social media websites is growing at a startling pace. A survey by the Pew Research Center found that social networking among internet users 50 and older nearly doubled, from 22 percent in April 2009 to 42 percent in May 2010.
For those ages 65 and older, use of social networking websites grew 100 percent. By comparison, the number of internet users from 18 to 29 who use social networking websites only rose by a dismal 13 percent.
"E-mail is still the primary way that older users maintain contact with friends, families and colleagues, but many older users now rely on social-network platforms to help manage their daily communications," explains Mary Madden, Senior Research Specialist and author of the report.
So internet users should be careful about what they post on Facebook or Twitter. Grandma might be watching.