Dying stars that undergo a supernova explosion cause shockwaves that have a tremendous impact on the physical state of all surrounding interstellar materials. Because of limitations in measuring equipment, there has been little to no quantitative research on the expansion velocity and kinetic energy of supernova shockwaves -- until now. A research team from Keio University in Japan has succeeded in precisely measuring the expansion velocity of the shockwave of supernova remnant W44. The remnant is located in the constellation Aquila, approximately 10,000 light-years away from our solar system. The team observed the high-temperature and high-density molecular gas in the millimeter and sub-millimeter wave ranges and showed that the expansion velocity of the W44 shockwave is 12.9 km/sec. In addition, other molecular gas with an extremely high velocity greater than 100 km/sec was also detected, but the origin of this super-high-velocity molecular gas remains unclear at this time.