Archives for Cosmology
Roger Penrose and the Big Bang Theory
The big bang would have required a very low entropy state. While most physicists just take such an initial state for granted, Penrose argues that such 'improbable' states don't just…
An earth like Planet needs more than just water
The presence of water is a pre-requisite. However, it is also crucial to be able to a) Keep (retain) that water. This isn't as easy as it sounds - both…
The size of a pulsar
It is not possible for the size of a radiation emitter to be greater than the wavelength of the pulse emitted. Pulse Widths are found to be 10 to 20…
A photon inside the core of the Sun
A photon generated inside the Sun's core, can take over 10 million years to reach the surface. This is because the majority of the core consists of protons and electrons…