Find here some of popular astronomical Python packages, along with those we have created.
Find here some of the main public astronomical catalogs and databases to retrieve data.
Sky chart of planets, stars and deep-sky objects, as a web app based on hypatie library
Live astronomical clock, including solar and sidereal times for input longtitude.
Fundamental Astronomy With Swift (FAWS) is the SOFA implementation in Swift.
The spectrum of an object can give us a lot of information, such as type of the object, radial velocity, redshift, presence of chemical elements or compounds in its atmosphere, an estimate of its distance, Read more…
In a recent post I have written about a few basic concepts of the Sloan Digital Sky Survey (SDSS) and how to retrieve some data using ADQL from its servers. Now, in this post, I’m Read more…
The Sloan Digital Sky Survey (SDSS) is one of the greatest deep-sky surveys ever made. It has been launched by *Apache Point Observatory* in New Mexico, United States. Here, I’m going to introduce briefly some Read more…
Imagine a photon of light, or any type of particle, has been emitted at the first moment of beginning of the Universe, i.e, when the Big Bang happened. What is the maximum distance that this Read more…
What is the scale factor? One of the most important characteristics of a universe is its scale factor. Scale factor is a dimensionless function of time. Imagine the current distance between two points to be Read more…
Hubble Constant In 1929 Edwin Hubble published an article in which he presented empirical evidence that our universe is expanding. At that time, most of the scientists believed in a static universe. After publishing Hubble’s Read more…
Before the twentieth century, scientists didn’t know that our universe is expanding. The expansion of the universe has been discovered in 1920s and redshift played a key in this great discovery. I show you in Read more…
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