What are the critical threats to child development in emergency situations?
Conflict and migration can pose some particularly critical threats to the development and well-being of children and adolescents: these include experiences of violence and fear; separation from parents or other care- givers; exploitation and abuse; and involvement in fighting forces.
Exploding stars seed the building blocks of the universe. Nuclear reactions inside stars, especially exploding supernovae, create elements heavier than hydrogen and helium, the building blocks of the universe.
It's well observed that stars form in clumps, known as star clusters. Around 70% of all galaxies are observed to contain star clusters in their centre (or nucleus), known as nuclear star clusters (NSCs), but it is not clear how they actually came to be there.