Gravitational Lensing

“Light always travels in a straight line.” But does it, always? What if I tell you that the light can bend? Seems non-intuitive, but come find out how light can bend around massive objects, how gravity, plays a role in this; and what exactly is Gravitational Lensing, in Saieesh’s article on The Wandering Star, a blog by SEDS Celestia. Read more to learn how gravity bends light like a telescope.

Roche Limit

Ever wondered what would happen if the Moon gets too closed to the Earth? It may seem on first thought that it’ll simply collide. But what if I tell you that it will be torn apart before reaching the surface of the earth. Surprised? Find out what really happens and learn more about the interesting concept of Roche Limits. Read about it on SEDS Celestia’s blog The Wandering Star.


SEDS Celestia brings to you an article written by Suchetan R S about the advancing new space tech to reach orbit with much less energy : Space Tethers. Learn all about this future technology and the physics behind it by reading this article.

Astrophotography for Beginners

One of the major part of night sky observations is Astrophotography. Even with advanced cameras and assistive technology available clicking images of stars and planets is not as easy and so we bring to you an comprehensive guide to astrophotography !!

Messier 45 – Pleiades

Greeting from SEDS Celestia!
We present to you the last article in the Messier Series about the seven sister of the night sky or more commonly know as the beautiful Pleiades. enjoy reading about this star cluster and getting to know more about it.

Messier 97: Owl Nebula

Greeting from SEDS Celestia !!
The Owl Nebula, also known as Messier 97 (M97), is a planetary nebula located in Ursa Major. The nebula lies at an approximate distance of 2,030 light years from Earth. It is known for its distinctive shape, resembling a pair of owl-like eyes, that can be seen in larger telescopes. Learn more about it in this interesting article by our club member Gayatri.

Eagle Nebula

Hope you are doing well. SEDS Celestia presents to you this amazing article about one of the most beautiful nebula present in this universe. Eagle Nebula. This articles talks in depth about interesting facts, science and history of this nebula including “The Pillars of Creation”. Dive right in to learn all about it .

M51: Whirlpool and Co.

Greeting from SEDS Celestia!
We hope all is well. We bring to you this new article which explores the beautiful Whirlpool galaxy explaining both its history and amazing science about it. Enjoy the read !!!

M104 – Sombrero Galaxy

Greeting from SEDS Celestia!
Lets learn about galaxies present in the messier series by learning about one of the most famous and beautiful elliptical galaxies, Sombrero galaxy. Learn about its history and its special features with this third article in Messier Series.

Introduction to Messier objects

Hello everyone! We present to you this article which is the first in the messier object series of articles which will be conducted by SEDS Celestia!
Messier Series is a collection of beautiful deep space objects including bright stars, Colorful Nebulae along with globular cluster to name a few. Learn about the beginning of this series with article before we delve upon the special astronomical object in the coming articles.


Greeting from SEDS Celestia!
Lets dive into the interesting mind boggling scientific phenomena which not only tricks your mind but makes you also adore the beauty of this universe.

Understanding Telescopes and Binoculars-Part 3

Greeting from SEDS Celestia. Its time to get into a bit old math and how it helps us during star gazing and observations. We present to you this article which deals with Co-ordinate system used to co-ordinate (xD) Sky-watching and finding stars relatively easily. We discuss two major systems in a quirky and fun to make observations easier.

Cosmic ray accelerator through the eye of Multi Messenger Astrophysics

In recent years, physicists have built a network of telescopes called Astrophyical Multimessenger Observatory Network(AMON) to find solutions to some of the deepest problems like Origin of Cosmic rays, Black holes and GRBs. On 2017 September 22, IceCube neutrino observatory found a high energy cosmic neutrino from the direction of a Blazar, TXS0506+056 and immediately sent alerts to all other telescopes like Fermi-LAT gamma ray telescope and lot more to pin point in the same direction of TXS0506+056 and a first successful Multi-messenger data was collected. In this article, we discuss how the Multimessenger Wavelength (MWL) data collected through AMON network is used to particularly answer the question of origin of cosmic rays and its future direction.