Subject
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- nuclear fusion1
- nuclear reactions1
- obhajoby1
- odborná literatura1
- photonics1
- physical cosmology1
- physicists1
- počasí1
- professional literature1
- pyrografie1
- relativistic cosmology1
- relativistická kosmologie1
- rentgenové dalekohledy1
- research and development1
- science and nature1
- space flights1
- space programs and projects1
- spiral galaxy1
- spirální galaxie1
- stars1