Astrophysicist and 'StarTalk' host Neil deGrasse Tyson uses the power of Twitter to answer some common questions about our universe. What is a quark? Is there a limit to the expansion of the universe?
The RRB Group D General Science Questions section plays an important role in scoring well in the Computer-Based Test (CBT). The RRB Group D Exam is scheduled from 27 November 2025 to 16 January 2026.
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