Spacecraft to hit at 9km/s, equivalent to over 26 times the speed of sound near sea level and nearly 50 per cent faster than Nasa’s mission.

Spacecraft to hit at 9km/s, equivalent to over 26 times the speed of sound near sea level and nearly 50 per cent faster than Nasa’s mission.

China aims to launch a planetary defence mission by 2030, planning to strike an asteroid with a Mach 26 projectile, surpassing NASA's Dart in ambition and scale.

Scientists say the test will help create the most detailed picture ever of a small asteroid

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