Scientists are planning to intentionally smash a spacecraft into a huge asteroid in 2022 to see inside the rock.
The European-led Asteroid Impact and Deflection Assessment mission (AIDA) will launch in 2019.
It will send two spacecraft — one built by US scientists and the other by the European Space Agency — on a three-year voyage to the asteroid Didymos at a cost of around £225million.
The asteroid has been selected for the mission because it has 'no chance of hitting the earth' making it perfect for this type of fact-finding missions.
Speaking at the 44th annual Lunar and Planetary Science Conference, experts explained Didymos is actually a binary asteroid system.
It consists of two separate space rocks - the largest measuring 2,625 feet (800 metres) across, and the smaller around 490 feet (150 m) - which are bound together by gravity.
The AIDA Didymos mission will be carried out to give scientists a groundbreaking first look at a binary space rock system and hopefully reveal ways that dangerous asteroids which pose a possible risk to the earth can be deflected.