The Sun’s temperature is not a constant and differs at the center and the surface. The corona is hotter than the surface. These temperatures and the light coming through are at diverse wavelengths and emit blackbody radiation. […]
Diffraction gratings have enabled astronomers to study light spectrum with greater precision. Previously, a prism was used in its place. Though effective, a prism worked slightly differently whenever used. Therefore, no consistent, reproducible results could be achieved. […]
The source of our Sun’s energy is fusion. It is a process where two protons fuse together into what is called a deuterium nucleus, which is a proton and a neutron. And yet, it isn’t only one but fusion of all of the elements, up to iron, can occur. […]
The Large Hadron Collider, or LHC, is a man-made particle accelerator. The concern it generates is that whether smashing protons in it at high energies is safe or not. […]
The fears regarding subatomic black holes are not founded. Physicists like Stephen Hawking believe that even if subatomic black holes are real, they evaporate away before becoming dangerous. […]
Though they are certain worries vis-à-vis the particle accelerators, they are not backed by science. One of the concerns is that large accelerators might make subatomic particles, called ‘strangelets’. […]
The age of the Methuselah star is estimated to be 14.46 ± 0.8 billion years, making it older than the estimated age of the universe itself. This casts doubts regarding the validity of the origin of the universe, vis-à-vis the big bang theory. […]
The Friedmann equation makes predictions about the age, extent, and size of the universe. Although there are uncertainties that have to be taken into account, it does give us some tangible data. […]
According to general relativity, matter and energy in space distort both space and time. When it comes to the geometry of the universe, its shape is determined by the critical amount of mass it contains. […]
The COBE satellite enabled scientists to view, for the first time, the nonuniformities in the CMB radiation. It led them to conclude that the CMB was uniform. […]
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