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Is darkness especially deep just before dawn? not really…
Most stars are spherical, but some are “squashed”, or even look like a peanut or a funnel. How does this happen?
145th birthday of Ernest Rutherford, the discoverer of the atomic structure who opened the era of nuclear research
What is dark matter? Why is the universe expanding? How does quantum mechanics go with relativity?
It seems almost simple – all you need to do is connect a number of hydrogen atoms to one helium atom and get energy
The third part in the video series explains two important topics in quantum mechanics.
It all has to do with density (mass per unit of volume). Any material whose density is lower than that of water will float, and any material with a higher density will sink.
2 minutes 
