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What is Nebula. Images of some nebula by Hubble


A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called "star nurseries."

How do stars form in a nebula?

Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.

Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.

Some of the most amazing nebula pictured by Hubble in Milky Way Galaxy




 The Eagle Nebula’s Pillars of Creation (M 16, Messier 16)
The dust and gas in the pillars is seared by the intense radiation from young stars and eroded by strong winds from massive nearby stars.
It is at the distance of 7000 light years from earth and the part of Constellation "Serpens Cauda"



The Bubble Nebula, also known as NGC 7635, is an emission nebula located 8 000 light-years away. And a part Constellation "Cassiopeia"




This shows part of the sky in the constellation of Orion (The Hunter). Rising like a giant seahorse from turbulent waves of dust and gas is the Horsehead Nebula, otherwise known as Barnard 33. At the distance of 1300 light years.
This image shows the region in infrared light, which has longer wavelengths than visible light and can pierce through the dusty material that usually obscures the nebula’s inner regions. The result is a rather ethereal and fragile-looking structure, made of delicate folds of gas — very different to the nebula’s appearance in visible light.


The most detailed view of the entire Crab Nebula ever also known as Messier 1. The Crab is among the most interesting and well studied objects in astronomy.

This at the distance of 6500 light years away and part of Constellation "Taurus"

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