NASA's Messenger probe reached the orbit of Mercury

NASA's Messenger space probe became the first spacecraft to orbit the closest planet to the Sun. Confirmation of the probe entering the orbit around Mercury came Thursday evening, CNN informs.

At 9:10 p.m. EDT, engineers Operations Center, received the anticipated radiometric signals confirming nominal burn shutdown and successful insertion of the MESSENGER probe into orbit around the planet Mercury. NASA's MErcury Surface, Space ENvironment, Geochemistry, and Ranging, or MESSENGER, rotated back to Earth by 9:45 p.m. EDT, and started transmitting data.

"Achieving Mercury orbit was by far the biggest milestone since MESSENGER was launched more than six and a half years ago," said Peter Bedini, MESSENGER project manager of the Applied Physics Laboratory (APL). "This accomplishment is the fruit of a tremendous amount of labor on the part of the navigation, guidance-and-control, and mission operations teams, who shepherded the spacecraft through its 4.9-billion-mile journey."

The space agency hopes to receive the first pictures from the Messenger probe later this month. The first phase of the mission is scheduled to start on April 4th.

"Despite its proximity to Earth, the planet Mercury has for decades been comparatively unexplored," said Sean Solomon, Messenger principal investigator.

"For the first time in history, a scientific observatory is in orbit about our solar system's innermost planet," he said. "Mercury's secrets, and the implications they hold for the formation and evolution of Earth-like planets, are about to be revealed."