Tag Archives: ganti

The picture of a black hole

by Prasad Ganti In January 2019, I wrote an article on radio astronomy in which I mentioned a recent book titled “Einstein’s Shadow” by Seth Fletcher. The book talked about photographing black holes and why it is very difficult to … Continue reading

Posted in May 2019, Sidereal Times | Tagged | Leave a comment

How vast is our Solar system ?

How vast is our solar system ? We know that the Sun is at the center of the solar system. How far does it extend ? The outer edge of the solar system has been extending since the ancient times … Continue reading

Posted in April 2019, Sidereal Times | Tagged | Leave a comment

Were Apollo manned moon landings fake ?

by Prasad Ganti In a recent gathering of friends and family, this topic came up. There are some conspiracy theorists who believe that NASA faked the moon landings. The reasoning is that the enormous pressure during the cold war to … Continue reading

Posted in March 2019, Sidereal Times | Tagged , | Leave a comment

New Horizons

by Prasad Ganti On the new year’s day, 2019, NASA’s New Horizons spacecraft passed the most distant object in our solar system, which any human made spacecraft came close to. This object is about four billion miles away from Earth, … Continue reading

Posted in February 2019, Sidereal Times | Tagged | Leave a comment

Radio telescopes and the black hole

by Prasad Ganti Astronomy traditionally have been confined to seeing the light emitted by heavenly bodies. Nineteenth century discoveries proved that light is only a small part of the spectrum of what is known as electromagnetic radiation. It was found … Continue reading

Posted in January 2019, Sidereal Times | Tagged | Leave a comment

India’s Space Ambitions

by Prasad Ganti Indian Prime Minister Narendra Modi stated boldly on August 15, 2018 that India will have one of its citizens in space by August 15, 2022 when India celebrates its 75th independence day. Sounds very much like President … Continue reading

Posted in December 2018, Sidereal Times | Tagged , | Leave a comment

The Goldilocks Zone

by Prasad Ganti The Goldilocks Zone While there are billions of galaxies and each galaxy harboring billions of stars, the probability of finding life elsewhere in the universe is significant. There may not be life resembling humans, in our neighborhood. … Continue reading

Posted in November 2018, Sidereal Times | Tagged , | Leave a comment

Pioneers in understanding our Universe

by Prasad Ganti Pioneers in understanding our Universe Bell Labs was the research arm of the telephone company AT&T. In the telecommunication business, the scientists got to experiment with different radio antennas. And as an act of serendipity, came up … Continue reading

Posted in October 2018, Sidereal Times | Tagged | Leave a comment

Flying towards the Sun

by Prasad Ganti Flying towards the Sun Sun, the source of energy for our planetary system, has been an object of reverence since times immemorial. The relentless quest to understand what goes on in the Sun which causes so much … Continue reading

Posted in September 2018, Sidereal Times | Tagged | Leave a comment