Spiral Galaxy Sample

Meet A1689B11 : The oldest spiral galaxy ever discovered

In a collaborative attempt, astrophysicists from different institutions have found success in discovery of A1689B11 - a spiral galaxy that's said to be the oldest discovered. The research reports an integral-field spectroscopic (IFS) observation of this gravitationally lensed spiral galaxy. It is the most ancient one till date and is calculated to be 11 billion years old, which means it existed after just 2.6 billion years after the big bang happened. Big bang happened around 13.7 billion years ago, which means this galaxy…

Surreal Flames

Perseids : Long Story Short

What are perseids? Perseids are the regular and most predictable meteor shower which appear regularly every year. They are associated with Swift Tuttle comet and appear to rise from the radiant in the constellation Perseus. Swift Tuttle comet, formerly known as 109P, travels toward Earth's part of solar system every 133 years leaving traces of perseids. It was last seen in 1992 after its discovery year 1862 AD. Next time Swift Tuttle is predicted to be seen in 2126 AD. Perseids,…

Supergiant

Introduction to the Universe

Stars Universe is vast and amazing. There are many millions of trillions of stars in the sky, most of them being bigger than our sun. Stars account for 98% of the matter in a galaxy. The rest of 2% consists of interstellar or galactic gas & dust in a very attenuated form. The normal density of interstellar gas throughout the galaxy is about one tenth of a hydrogen atom per cm³ volume. Stars tend to form groups. Major types of…