It was chosen to commemorate the 50th anniversary of Hubble’s launch into Earth orbit by the crew of space shuttle STS-31 on 24 April 1990. NGC 7635 is located near a large molecular cloud and lies approximately in the same direction as the open star cluster Messier 52, near the border of the constellation Cepheus. NGC 7635 is located near a large molecular cloud and lies in approximately the same direction as the open star cluster Messier 52, near the boundary with the constellation Cepheus. NGC 7635 is 0.5 degrees southwest of the open star cluster M52, and the open star cluster NGC 7510 is another 1.5 degrees southwest.
The bubble is created by the stellar wind.
What is at the centre of NGC 6302?
Most planetary nebulae are distinctive, but few are as extreme as NGC 6302, also known as the Beetle Nebula. The star at the centre of the nebula is a white dwarf with an estimated mass of about 0.64 solar masses. It has ejected its gas envelope and is now releasing a stream of ultraviolet radiation that causes the ejected material to glow. However, thanks to the improved resolution and sensitivity of the Hubble Space Telescope’s new Wide Field Camera 3, the faint star at the centre of the nebula has been detected.
The nebula contains hydrocarbons, carbonates, water ice and iron and is estimated to be about 10,000 years old.
How hot is NGC 6302?
Spectroscopic observations with ground-based telescopes show that the gas is about 36 000 degrees Celsius, which is unusually hot compared to a typical planetary nebula. All planetary nebulae form at the end of the life of an intermediate-mass star, about 1-8 solar masses. NGC 6302 (also known as the Beetle Nebula, Butterfly Nebula or Caldwell 6) is a bipolar planetary nebula in the constellation Scorpio. NGC 6302 has a complex structure that can be described as bipolar with two primary lobes, although there is evidence of a second pair of lobes that may have belonged to an earlier phase of mass loss. Side-by-side images of NGC 6302 (left) and 7027 (right), with a legend indicating which filters were used to highlight which elements, as well as their size and orientation.
How hot is the Bubble Nebula?
The hot central star, SAO 20575, also continued to move through space, eventually moving away from the centre of the nebula. Using long exposure photography, amateur astrophotographers can capture the light from this nebula over long periods of time. The Bubble Nebula is one of only a few astronomical objects that have been observed with various instruments aboard Hubble. There are several other nebular regions near the Bubble Nebula and M52, including a small, bright emission nebula and a larger emission nebula called Sh2-157. The hot central star SAO 20575 also continued to move through space, eventually moving away from the centre of the nebula.
Near the Bubble Nebula and M52 are several other nebular regions, including a small, bright emission nebula and a larger emission nebula called Sh2-157, which pulls the cold interstellar gas ahead of it and forms the outer edge of the bubble, much like a snowplough piles snow in front of it as it moves forward.
