UK engineers have tested a projectile technology that they believe could be used to explore the Solar System.
The steel penetrator was fired at a 10-tonne cube of ice to simulate the surface of Jupiter's moon Europa.
It hit the block at a speed of 340m/s and decelerated rapidly, but its structure remained intact, as did its interior components.
Researchers say the penetrator would be a robust and inexpensive way to land instruments on other worlds.
These might be seismometers to study the interior of Mars, or a miniature organic chemistry laboratory to check for microbial activity on icy Jovian satellites.
Scientists envisage several penetrators being deployed at once, carrying perhaps a network of sensors to widely separated locations in the sub-surface.
Being able to get just a few metres down is key, because if life exists anywhere else in the Solar System, it is likely to be buried away from harsh space radiation. Thursday's test was certainly spectacular.
The full-size, 20kg projectile slammed into the ice block at just under the speed of sound, producing a huge plume of snow.
Space 'ploughshare'
The probe experienced a peak deceleration of 24,000g. To put that in context, an ejecting fighter pilot might experience 12-14g.
Its paintwork was scuffed a little after coming to rest against the roof of the concrete holding box, but the projectile was otherwise unaffected by the violent encounter.
"It was really successful because the entry velocity was higher than expected and all the systems we've looked at so far have survived," Marie-Claire Perkinson, the programme's industrial leader from Astrium UK, told BBC News.
The latest demonstration was conducted at Pendine in West Wales. This is where defence company QinetiQ operates a long rocket track on which objects can be accelerated to high speed before impacting a target. Normally, this would be a new type of missile that needed to be tested before entering military service.
"It's a classic case of swords to ploughshares," said QinetiQ fellow Phil Church.
"This is a civilian project where we are applying a lot of our technical capabilities in simulation, experiments and materials, but which we wouldn't be able to do without the Ministry of Defence research over the past 30 to 40 years underpinning it all."
The space penetrator has itself been in development for almost 10 years, and was originally proposed for a British lunar mission called Moonlite.
That venture was eventually shelved, but the idea of a "hard lander" was so compelling, the European Space Agency decided to pick up the concept.