Cosmic Vision – Dr. J. J. Rawal
The sun is the brightest in the sky during the day. Then the moon is illuminated. Then Venus is illuminated. Then the star of Vyagh is illuminated. Then other planets and stars are illuminated.
The magnitude of the star’s luminosity at which the naked eye can see a faint star is considered to be six magnitudes. This number was determined 2300 years ago by the famous Greek astronomer Hipparchus. Interestingly, even after so many centuries, Hipparchus’ calculation of this star’s brightness is still in use today.
Even though Panini’s grammar and Panini’s algorithm were created 2600 years ago, they are still in use today. The Richter scale of earthquakes is only 100 years old.
The difference between the five magnitudes is 100 times the brightness, according to the Hipparchus star’s brightness figure. As magnitude increases on the Hipparchus magnitude scale, stars are fainter and fainter. As magnitude increases on the Richter scale of an earthquake, so does the intensity of the earthquake. A magnitude increase on the Richter scale will release 33 times more energy from underground.
The Hubble Space Telescope can see a star 1000 billion billion times fainter than the Sun. See how many faint stars the Hubble Space Telescope can see. That is why the Hubble telescope has made a great contribution in pushing the frontiers of astronomy far and wide. Sent images of dim satellites in the dim light of Neptune, Pluto. The Hubble telescope has shown us such a faint star in just one hour of exposure. The Hubble Space Telescope has taken exposures of one or more weeks in a row and has focused our eyes on dimly lit galaxies (bubble galaxies). So it is ahead in astronomy and other branches of science and technology.
Young scientists in India are talented, but it is difficult to get them a platform. It is not enough to have fifty, a hundred students working in two or four science and astronomy institutes in such research works, much less prepare another batch of young students.
Now NASA has floated the James Webb Telescope into space, fifty times more powerful than the Hubble Space Telescope. This telescope will bring a hundred billion billion times fainter star within our range of vision. This is like the horizon around us. The horizon limits our visible universe, but there is also a world beyond. As we climb higher and higher, our horizons expand. Likewise, as we build more and more powerful telescopes and use them, billions and billions of faint stars come into our field of view and make us see a larger and larger universe.
That is, how deep we can see into the universe. How large a universe we can see depends on how powerful a telescope we look at it with. That is, it depends on how powerful a telescope you look at the universe. Seen this way, the universe is Maya. Each person in the universe, the universe of living things is different. It depends on the platform from which you view the universe. There cannot be a single definition of the universe, it is relative.
Any star that appears dim but is actually dim cannot be said to be. It may be very bright, but it is so far away that it appears dim.
Astronomers have discovered a new scheme to compare the brightness of all stars. They place each star at a distance of 32.5 light years and observe its brightness. It is called absolute magnitude. It is difficult to know what is true and what is false in this universe. We see a star, but in fact it has exploded, but it takes years, centuries or millennia for the light from there to carry this information to us. Until then, we will continue to watch that star take good care of himself.
How faint a faint star is depends on whether we see it with the naked eye or binoculars, and with how powerful a telescope.
If we take the aforementioned powerful telescope to the moon and stargaze, we can see a billion billion billion (one followed by 27 zeros) faint stars. That’s why astronomers aspire to establish a colony on the moon, so they can see billions of billions of billions of times fainter stars that are actually much brighter. To the naked eye, two or four galaxies are visible, but if we look at the sky with the above-mentioned telescopes, we can see thousands and thousands of galaxies.
It is difficult to extract.
This universe is very beautiful. The poet Madh, who became distinguished in the seventh century (then in Gujarat), has said in his work Shirupalavadha that moment by moment yatnavata mupaiti/tadeva rupam ramaniyatiya: i.e., that which assumes novelty from moment to moment is the true beauty. The cosmology is so beautiful. Cosmology is relative, not absolute, which is why it is false. Brahman alone is absolute. In this sense, Jagatguru Shankaracharya has said that Brahmasatya, Jagat Mithya. It is the truth as long as the love of the world is seen. As soon as his love is understood, the world becomes false.