England's Bloodhound Project
successfully tested its booster in October, but other racers are likewise in hot pursuit of the land - speed record
Not exact matches
Workers also
successfully test - fired all 27 of the rocket's Merlin engines in January, which are attached to the
boosters in clusters of nine.
The
booster has been used
successfully in cancer vaccines but never had been
tested as a vaccine for dust - mite allergies.