RESOLVING THE LEDGER
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A wayward 8,800-pound SpaceX Falcon 9 rocket booster is expected to slam into the moon very early on Wednesday in a rare case of a man-made collision with the lunar surface.The upper part of the rocket, which boosted two lunar landers into space in January 2025, disengaged as the two spacecraft went on their way. The mission was partly successful, as Firefly\u0027s Blue Ghost-1 made a successful landing, but Japan\u0027s ispace Hakuto-R crash-landed on the surface.But the rocket, which is about 45 feet long and 12 feet wide, has been in orbit ever since \u2014 until about 2:35 a.m. Eastern time on Wednesday when it\u0027s expected to crash into the lunar surface at a speed of 5,400 mph.Julianna Scheiman, SpaceX\u0027s director of NASA Science and Dragon Programs, said in a press conference Monday the company followed "the appropriate rules and regulations" for properly disposing of the Falcon 9 second stage after launching it on Jan. 15, 2025, but "what has happened is essentially a mixture of solar activity and gravity forces have put it on a path towards the moon."Don\u0027t expect to see anything though \u2014 the impact will be very quick and impossible to see with the naked eye. Even observers with very large telescopes may not see anything, according to\u00a0a study about the upcoming collision released by almost two dozen scientists.Before and after photos will be taken by the Lunar Reconnaissance Orbiter \u2014 a small satellite that orbits the moon \u2014 but it will likely take a week or two before they are seen, NASA confirmed."As a scientist, I also am very excited to see the observation," Scheiman told reporters.It will be challenging or impossible to detect the impact flash because the impact is happening on the lit side of the moon, according to the study. To date, no natural or artificial impact flash has ever been observed on the lit side of the moon, researchers say.The moon is regularly pelted by objects, but they are usually natural occurrences, like meteoroids. The number of artificial impacts is relatively few.The object is significantly more massive than most natural lunar impactors, but is also moving much more slowly, the study said. Still, the impact will be the equivalent of 2.8 tons of TNT, according to the study, and leave a crater of 65 to 100 feet in diameter that is about 16 feet deep.The first man-made object to hit the moon was an intentional collision launched by the Soviet Union in 1959. A couple of U.S.-built spacecraft parts hit the moon during the Apollo missions from 1969 to 1972. A Japanese robotic probe hit the moon in 1993 and a European Space Agency satellite collided with the lunar surface in 2006.In 2009, NASA intentionally crashed the upper stage of a rocket into a permanently shadowed crater at the moon\u0027s south pole to determine if water ice existed there. The impact exposed a plume of material that might not have seen direct sunlight for billions of years. The mission confirmed the presence of water ice at the lunar south pole, one of the major reasons why countries like the United States and China want to build moon bases there.Like that collision in 2009, in the minutes following the impact of the SpaceX rocket, a cloud of lunar dust and possibly gas/vapor is expected to be lofted above the surface.\u00a0Carl Schmidt, a planetary scientist at Boston University\u0027s Center for Space Physics, told CBS News he hopes by analyzing that data he could determine how much water ice was hidden below the surface on that part of the moon."Just about everyone who can point a telescope at this object is going to," Schmidt said.
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