Is another scientist work still valid if their hypothesis is dis proven?

Yes, a scientist's work can still be valid even if their hypothesis is disproven. Scientific inquiry often involves testing hypotheses, and disproving a hypothesis can lead to new insights and questions that advance understanding. The process of exploration and experimentation is fundamental to science, and learning from incorrect hypotheses is crucial for progress. Disproven hypotheses can still contribute to the body of knowledge and inform future research directions.