2007 in spaceflight 2007 in spaceflight The year 2007 contained several significant events in spaceflight, including a Chinese ASAT test, the launches of the US Phoenix and Dawn missions to study Mars and Asteroid belt respectively, Japan's Kaguya Lunar orbiter, and the first Chinese Lunar probe, Chang'e 1. The internationally accepted definition of a spaceflight is any flight which crosses the Kármán line, 100 kilometres above sea level. The first recorded spaceflight launch of the year occurred on 10 January, when a PSLV, launched from the Satish Dhawan Space Centre, placed four spacecraft into low Earth orbit. One of these spacecraft was SRE-1,
Explorer 43 Explorer 43 Explorer 43, also called as IMP-I and IMP 6, was a U.S. satellite launched as part of Explorers program. Explorer 43 as launched on March 13, 1971 on Cape Canaveral, with an Delta rocket. Explorer 43 was the sixth satellite of the Interplanetary Monitoring Platform. Explorer 43 continued the study, begun by earlier IMPs, of the interplanetary and outer magnetospheric regions by measuring energetic particles, plasma, and electric and magnetic fields. A radioastronomy experiment was also included in the spacecraft payload. The 16-sided spacecraft was high by in diameter. The spacecraft spin axis was normal to the ecliptic