Josh Groban and Sara Bareilles tweet excitement over Mars landing

America did it! No, we're not talking about the Olympics we're talking about landing the spacecraft Curiosity on Mars. Now NASA hopes their two-year pioneering mission will lead to signs that life exists on a planet other than Earth.

With all the excitement, celebs took to Twitter to share their thoughts.

Sara Bareilles assured us everything would be okay.

Sara Bareilles

@SaraBareilles

...And the world breathes a collective sigh of relief that "Men are from Mars" was proven as just a euphemism. #nobodyactuallylivesthere

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Richard Marx hopes he can benefit from finding new life on Mars.

Richard Marx

@richardmarx

Praying that Curiosity finds a lifeform that digs power ballads.

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will.i.am came up with a pretty apropos name for the first photo from the red planet.

will.i.am

@iamwill

The first pic from #marscuriosity is a wheel...this is wheel.i.am...#JPL @Astro_Flow @CNN yfrog.com/j2cqmyuj

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While Josh Groban proved why he might not be the best candidate for space travel.

josh groban

@joshgroban

First picture from my landing on mars. #MSL #JGmarsconcert2012 #alive pic.twitter.com/vztSkg9n

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He also revealed an interesting fact about the "Mohawk guy," who's making as many headlines as the landing itself.

josh groban

@joshgroban

If you see a guy with a faux-hawk in mission control, he's a jerk. Promised me a "WORKING" toilet system. #msl #JGmarsconcert2012

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And Harold and Kumar's Kal Penn tweeted what we're all thinking.

Kal Penn

@kalpenn

Waiting for the "call me maybe" video from the rover on Mars.

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-Shannon Carlin, CBS Local