The 'Ghost of Cassiopeia' Drifts Along in This Spooky Hubble Image

The 'Ghost of Cassiopeia' Drifts Along in This Spooky Hubble Image

The 'Ghost of Cassiopeia' Drifts Along in This Spooky Hubble Image







The "Cassiopeia Ghost", a cloud of gas and dust that erodes slowly, forms a glowing haze in this mysterious image of the Hubble Space Telescope.



	

	the nebula, called IC 63, moves 550 light years from Earth in the constellation Cassiopeia. Its ethereal form is influenced from afar by the fiercely bright variable star called Gamma Cassiopeiae. Although the star is several light-years away from the nebula, it makes its powerful presence felt with explosions of radiation, according to a declaration of the European Space Agency.





						


This ghostly nebula IC 63, some 550 light years from Earth, emits alpha radiation and also reflects the cold blue light of the powerful nearby star Gamma Cassiopeiae. The nebula is approximately 0.31 light years high and 0.23 light years wide.

            						    Credit: ESA / Hubble / NASA. 


		The blue-white subgiant star is 19 times the mass of the sun and can reach 65,000 times the brightness of the sun when it rotates to 1 million miles (1.6 million kilometers) per hour, which is equivalent to 200 times the rotation speed of the sun, according to the statement. It is surrounded by a disc of material that periodically bursts with material during its furious turn, making the star Burns temporarily brighter in the night sky of the north.

		Gamma Cassiopeiae contributes in two different ways to the dark color palate of the nebula. First, the ultraviolet radiation from the star reaches the nebula, energizing its hydrogen molecules and causing them to release an intense red glow from the alpha light of hydrogen. And second, the light of the star is reflected in the dust of the nebula, shining with a cold blue.





						


The nebulous region near the bright star Gamma Cassiopeiae, including the "Cassiopeia Ghost", IC 63.

            						    Credit: ESA / Hubble / NASA / Digitized Sky Survey 2 / Thanks: Davide de Martin 


		Looking from Earth, the entire region of nebulae under the influence of Gamma Cassiopeiae can be seen in autumn and winter from the northern hemisphere, but the area is very dim, and IC 63 is only a small part of it. This view from Hubble, looking from Earth's atmosphere, gives "arguably the most detailed image ever taken of IC 63," ESA officials said in the statement.

		And the ultraviolet light that contributes to the ghostly brightness of the nebula will also be its downfall: the radiation is slowly dissipating the nebula from the light years away, according to the statement.

		Someday, there may be nothing left.



	Send an email to Sarah Lewin at slewin@space.com or follow her @SarahExplains. Follow us on Twitter @Spacedotcom and in Facebook. Original article about Space.com.

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