"Launching radioactive material through the Earth's atmosphere brings safety concerns. You have to have a special license to do that, but it is not insurmountable," says Dr Simeon Barber, planetary science specialist at the Open University.
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About the same time, footage shows the parliament gatehouse on fire.
The Mini is a bite-sized version of The New York Times' revered daily crossword. While the crossword is a lengthier experience that requires both knowledge and patience to complete, The Mini is an entirely different vibe.