Tag Archives: ganti

Dark Matter

by Prasad Ganti Just when we thought that things are falling into place and that we know enough about the Universe, came the revelation that the Universe is dominated by dark matter and dark energy; which between them account for … Continue reading

Posted in Mid-summer 2017, Sidereal Times | Tagged , | Leave a comment

Exoplanets

by Prasad Ganti In the last decade or so, there has been lot of excitement around the discovery of exoplanets, that is the planets outside of our solar system. An interesting book on this topic has been “Exoplanets” by Michael … Continue reading

Posted in June 2017, Sidereal Times | Tagged , | Leave a comment

Recycling rockets.

by Prasad Ganti Space X recently launched its flagship rocket Falcon 9 to send cargo to the International Space Station. It was almost a routine launch, barely indistinguishable from the others except for one feature. The first stage of the … Continue reading

Posted in May 2017, Sidereal Times | Tagged , | Leave a comment

The States of Matter

by Prasad Ganti As I listened to a science lecture on a Saturday morning, “Science on Saturdays” at the Princeton Plasma Physics Lab, the title was related to interaction of plasma with the surfaces. It made me think when the … Continue reading

Posted in April 2017, Sidereal Times | Tagged , | Leave a comment

Launching a hundred satellites

by Prasad Ganti India’s space agency ISRO recently launched a rocket with one hundred and four satellites as payload and released each satellite in succession flawlessly into the intended orbit. Apart from setting a record, some trends became apparent to … Continue reading

Posted in March 2017, Sidereal Times | Tagged , | Leave a comment

So far away…

by Prasad Ganti “Betelgeuse is 640 million light years away. It is a red giant, and is almost dying”. How do we know this, when it is difficult to find out what is happening in Syria or Russia? After all … Continue reading

Posted in January 2017, Sidereal Times | Tagged , | Leave a comment

Cosmic Fireworks

by Prasad Ganti Stars are born, they live, and then they die. Like any living beings. They are born when lot of gas and dust comes together under the influence of gravity and a nuclear furnace gets lit. Hydrogen powers … Continue reading

Posted in December 2016, Sidereal Times | Tagged , | Leave a comment

The Astronomical Vantage Point

By Prasad Ganti Last winter, I was driving across Pennsylvania in the middle of the night from the western border with Ohio to the south eastern border with New Jersey. I saw Orion the hunter, the most prominent constellation in … Continue reading

Posted in November 2016, Sidereal Times | Tagged | Leave a comment