The world is about to see its first spacecraft land on a comet -- a speeding one.

According to CNN, the European Space Agency (ESA) has announced on Tuesday that Rosetta mission controllers already made the first "Go" signal attempt to land on Comet 67P/ Churyumov-Gerasimenko. The landing craft will be a tinier pod called "Philae," which has been attached to mother ship Rosetta for over a decade.

But once Philae takes off from Rosetta's side, it can't be steered. The separation is expected tomorrow at 11:00 am EST, as reported by Gizmodo.

However, a recent report from Telegraph noted a glitch in the mission -- on Tuesday, Philae did not power up properly when controllers from ESA switched it on for the first time.

KMPH specified that by 4:03 AM ET (1:03 AM PT) on Nov. 12, the on-ground confirmation of the initial separation is expected. Philae is slated to land on the comet by 11:02 AM ET (8:02 AM PT).

The Rosetta mission was launched in 2004 following its quest to determine whether or not comets seeded life on Earth. By the time Philae lands successfully, Telegraph said it will be testing the surface for amino acids -- the basic unit of protein -- and provide light to the possibility of similar comets giving life on Earth.

Researchers seem pleased about the Rosetta-Philae mission. ESA project scientist Matt Taylor said in the CNN report: "It's got an awesome profile -- the adventure of the decade-long journey necessary to capture its prey, flying past the Earth, Mars and two asteroids on the way."

Apparently, Comet 67P isn't the original target choice. The New York Times spoke with planetary scientist Joel Parker from Colorado's Southwest Research Institute who said, "... The original target for the mission was the comet Wirtanen. But the original launch of Rosetta was delayed."

"That delay made us lose the window of opportunity to reach comet Wirtanen. So there were meetings of the science team to select another target, one that was reachable and scientifically interesting. That is how Comet 67P was selected," Parker explained.

Meanwhile, Space.com noted a mysterious "song" emitted by Comet 67P. The sound was captured by the Rosetta spacecraft.

ESA officials explained that it was produced by "oscillations in the magnetic field in the comet's environment." Accordingly, the comet emits such sound in a frequency that the human ear cannot hear.

Watch the livestream of events directly from the European Space Agency here. Currently, the agency has announced that its next live update will be at 02:35 GMT/ 03:35 CET.

The historic event will also be livestreamed by National Geographic (via Facebook) here.

Subscribe for Twitter updates from the official Philae Lander here.

Listen to Comet 67P's "humming" (via VideoFromSpace) below. Rosetta mission and Comet 67P images follow.

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