Astronomy
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606Why is the Sky Dark at Night?
Currently the question that challenges most astronomers is, ‘why is the sky dark at night despite so many stars?’. Surely the sky...
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516Hubble’s Discoveries
Two months after the launch in April 1990 of the Hubble Space Telescope (HST), it was found that its primary mirror was...
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2.4KCosmic Ray Studies In India
The energy of the cosmic rays nuclei covers a wide range from one million electron volt (MeV) to about 1020 eV, which...
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576New Theories In Astronomy
When Albert Einstein confirmed the atomic theory of matter, he surprised experts by declaring that starlight would be deflected by gravity. People...
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584The Impact Of The Big Bang
We have seen how Karl Jansky found radio waves from an unexpected direction in space, which were subsequently attributed to cosmic sources....
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523Black Holes – New Discoveries
Gamma rays from outer space are in the news. Recent satellite and telescope discoveries have located their origin. In the process, new...