To save Earth, a spacecraft will collide with a small 

asteroid called Demorphos in September of this year. The idea

 is to give it a strong push in order to

 avoid a violent collision between it and the earth in the future

NASA's DART (Double Asteroid Redirection Test) mission will be launched

in November 2021. During the "impact" of Demorphos with Didymos,

the long-range orbit will be changed. Didymos is a companion

asteroid of Demorphos. Nevertheless, the plan may be more violent

than he anticipated.ccording to a new study by researchers 

at the University of Bern and the National Center for

 Research Competence (NCCR) PlanetS, the test can significantly distort Dimorphos

As the lead author of the study, Sabina Radokan notes, 

Demorphos "may have a very loose internal structure - like a

pile of rubble - held together by gravitational interactions and small cohesive forces.".