But Hadfield had one more treat for his fans down on earth: he played a cover version of David Bowie’s “Space Oddity.” showing how he's also a great singer.

He sings a "revised version" of the song the 1969 track (with modified lyrics such as, “Ground control to Major Tom, lock your Soyuz hatch and put your helmet on,” referencing how his spacecraft will land him in Kazakhstan) while floating inside the ship. He plays an acoustic guitar while gazing at the Earth 230 miles below.

The clip is believed to be the first music video filmed in space.

Hadfield also recently hosted a singalong from space with thousands of Canadian schoolchildren.

He’s handed over command of the station to Russian cosmonaut Pavel Vinogradov ahead of his return.

The actor competed with Fallon in a round of lip sync doing a mean impersonation of Katy Perry. He minced around in his suit while delivering a comic performance of the highest quality, even whipping off his jacket at one point.

But that was only part of the story, which began when Tonight Show host in waiting Fallon gave a cheesily soulful performance of Melissa Manchester's Don't Cry Out Loud.It was only after this John, 33, sprung into action with his unique take on Katy's number one hit Teenage Dream.

Jimmy, 38, was clearly intimidated by the young star’s confidence, saying afterwards: 'Fake breathing at the end and everything.'

This was just the warm up however as Fallon then lip-synced Das EFX's They Want EFX and Somewhere Over the Rainbow, not doing so badly himself.

Krasinski struck back, performing Run DMC's Peter Piper followed by Boyz II Men's I'll Make Love to You- saving his biggest moment for last.

He grabbed his earpiece, tore off his jacket, and loosened his tie inviting Fallon to fake-sing together, , 'I'll make love to you, like you want me to!'

So the real winners are the viewers who get to watch Krasinski serenade.

Enjoy the video:

He asks mom not to worry so much about cleaning, "Our house isn't messy, it's awesome. It's awesome because we live in it."

The young star goes on to say with sincerity, "It's just hard to grow up. Sometimes we just need moms ... to tell us everything is OK."

"Thanks for believing in us, putting up with us, and straight-up loving us," he adds, in his usual authoritative tone.

You don’t need to be as gifted in conveying your lines as the precocious kid in the video above, or do dramatic things, just send up some gratitude to the mother in your life in whatever way you can and let her know why she is the best. Remember, mom upside down is "wow."

We love you, moms. You're beautiful. Thank you for everything.

But the appearance of a successful Hollywood actor using Kickstarter has been criticisized.

Few critics, like Emmy Award-winning writer Ken Levine, have said that the crowdfunding platform should be left for smaller, lesser-known filmmakers trying to finance their projects:

"The idea – and it’s a great one – is that Kickstarter allows filmmakers who otherwise would have NO access to Hollywood and NO access to serious investors to scrounge up enough money to make their movies. Zach Braff has contacts. Zach Braff has a name. Zach Braff has a track record."

Braff addresses the criticism he's received and talks about the benefits — for both his team and fans — that the project has sparked in the below interview, shot by film group KickStarted,

"This isn't a money-making endeavor ... Making a tiny art film is not where people go to to make money. This is a passion project," he says. "I'm making this movie for you and, ostensibly, with you. You're coming along on the ride, you're going to be a little GoPro camera on my shoulder experiencing how an independent movie is made ... I owe [the fans] everything."

Braff says he's still contributing a lot — an "ass-ton," he says jokingly — of his own money to the film. Braff has also been extremely interactive with his fan base, through Facebook and Reddit AMAs, and he says Kickstarter has increased that discussion even more. Plus, he says, the engagement will only grow as the filming process begins.

"It's a sense of community; it's a club," he says, "and it's a club of like-minded people who are interested in the same thing."

Besides,in his defense, Braff points out that Kickstarter had its highest traffic day ever, the day that he released his project and that this seems to have at least given a small boost to other projects.

KickStarted, the upcoming documentary project is headed by filmmakers Jason Cooper and Jay Armitage and will focus on crowdfunding and the creators behind it. The group will launch its own Kickstarter campaign for the film on May 21.

Watch the full interview for now, below.

Apparently, what is now displayed in the Google Maps sidebar will be shown on the top of a full-screen map and e site will also reflect new colors and icons.

The new feature also introduces tighter integration with its Google+ social network. The search results can supposedly be filtered for recommendations by users' Google+ circles.

Based on the screenshots published by the blog, the actual map won't change much, but the author pointed out that the update will create a more immersive interface that integrates well with mobile devices.

While the changes will likely appear first on the web-based version of Google Maps for desktops and laptops, it will also roll out to the company's Android app in due time. For tablets, the new design  should work well - but for smartphones, it seems likely that the company will have to make sacrifices in order to get information readable on sub-4in screens.

Google is constantly tinkering with its maps, adding new features like details for certain countries, live transit information, and high-resolution imagery. Drivers, cyclists and walkers have been ditching dedicated sat-nav units for Google’s satellite navigation functionality which was introduced in 2010 and offers turn-by-turn directions in 2010.

But, it's been quite some time since the company has done a major interface redesign.

While Google Operating System didn’t reveal when the new interface will be launched, the site hinted that it could debut at Google I/O, the company's annual developers' conference, next week, possibly alongside a rumoured refresh to the Android 'Jelly Bean' operating system.

On March 20, 2013, a piece of "wiper" malware designed to destroy data on hard drives and make them impossible to reboot, was launched against three South Korean media organizations and four banks. The virus, which the U.S. Computer Emergency Readiness Team (US-CERT) called "low sophistication—high damage" was designed specifically to disable two types of South Korean antivirus engines.

The wiper, which has come to be known as "DarkSeoul," poses little threat to U.S. computers. It does, however, reinforce the importance of purchasing and regularly updating virus protection software. It also shows how concerned officials are about the threat of an international cyber war.

Mysterious Origins of DarkSeoul

DarkSeoul was delivered to South Korean banks through e-mails that were said to contain credit card information about two weeks before the virus actually started to function. Instead of downloading credit card numbers, recipients downloaded the wiper virus, which became active at 2 p.m. KST on March 20.

On more than 30,000 computer screens, a message appeared: "Please install an operating system on your hard disk." Some media outlets reported that a graphic of three skulls popped up onscreen along with the words, "Hacked by Whois Team." Then cash machines stopped operating. Master boot records were deleted from the affected hard drives, and the computers could not be rebooted.

Some have speculated that DarkSeoul came from a North Korean cyber-crime laboratory, but no real evidence has linked the wiper back to Seoul's northern neighbor. However, because many experts agree that North Korea does have the ability to construct and deploy cyber attacks, the incident has raised fears of just how much damage a cyber war could cause throughout the world.

The Tallinn Manual

Coincidentally, just a few days before DarkSeoul was deployed, NATO released a manual called "The Tallinn Manual on the International Law Applicable to Cyber Warfare." The manual is designed to provide international legal guidance on how countries can respond to a cyber attack. However, critics argue that the document gives countries the legal ability to respond to computer virus attacks by shooting missiles.

How bad does a cyber attack have to be before a nation can mount an armed counterattack? Two years ago, the U.S. Department of Defense said that a cyber attack that shut down the U.S. electrical grid would warrant a missile launch in response. The Tallinn Manual says that attacks that cause physical or personal damage can warrant a military response, but U.S. military lawyers have argued that an attack that caused catastrophic financial losses, such as an attack that disabled Wall Street, could also warrant a military counterattack. The manual ultimately said that each country can individually decide the threshold of economic damage that would be sufficient to start a war.

This interpretation could cause problems for the U.S., which has its own cyber warfare program. The Stuxnet virus, which was launched by the U.S. in conjunction with Israelis against Iran's Natanz nuclear reprocessing plant, could have been interpreted by Iran, according to the Tallinn Manual, as an act of war. Also, the Tallinn Manual gives countries leeway to launch preemptive strikes if they find that a cyber attack is "imminent." Considering all of these possibilities, it's easy to see how a cyber attack could easily precipitate a dangerous armed conflict.

The Potential for Cyber Damage

CIA Director Leon Panetta described the potential damage that a cyber war could inflict as a "Cyber Pearl Harbor," according to ABC news. Prolonged power outages, power grid collapse and irreparable Internet disruptions could hinder food shipments as well as keep machines from dispensing cash. Other cyber specialists fear that hackers could figure out a way to open American dams, releasing devastating walls of water into American communities.

US-CERT advises all users and administrators who control critical infrastructure and key resources in the U.S. to assume that an attack will eventually occur against their enterprises. These organizations should develop resilient network models designed both to minimize damage and restore critical systems as quickly as possible. Even small businesses need to make sure their antivirus and security solutions are up-do-date. In today's world, the possibility of a cyber attack is not so much a question of if, but when.

About the Author: Noah Gamer is a driven business leader with experience in Internet marketing, Web software development and security software. Currently, he develops Internet strategy and directs global SEO for Trend Micro.