PIX4621062: Nebula Sh2 - 155 in Cephee - The Cave Nebula The north is at top. The Cave Nebula is a faint region of Hii emission and surrounding dust in Cepheus constellation. This area is rich of colours and fine details. The central “” cave - like”” structure name the nebula, but notice also the subtle patch of blue reflection nebulosity all around in the field. The star colors are also beautiful, which adds a nice touch to this celestial field. This image is based on data acquired by the Oschin Telescope at the Mount Palomar Observatory / Bridgeman Images
PIX4620263: Southern Crown Nebula - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. On the right, a more distant globular cluster, NGC 6723 cluster in Sagittarius is about 30,000 light years away from Earth / Bridgeman Images
PIX4619744: Nebulae M20 - M8 and NGC 6559 in Sagittarius - Nebulae M20 - M8 and NGC 6559 in Sagittarius - View of nebulae of the Lagoon (M - 8/ngc 6523), bottom, Trifide (M20), top, and NGC 6559 (left). Located in Sagittarius, these nebulae are about 5000 light years away from Earth / Bridgeman Images
PIX4622272: Nebula IC 1396 in Cephee infrared view - 18/12/2003 The large composite image on the left is a product of combining data from the observator's multiband imaging photometer and the infrared array camera. The thermal emission at 24 microns measured by the photometer (red) is combined with near - infrared emission from the camera at 3.6/4.5 microns (blue) and from 5.8/8.0 microns (green). The colors of the diffuse emission and filaments vary, and are a combination of molecular hydrogen (which tends to be green) and polycyclic aromatic hydrocarbon (brown) emissions. Nasa's Spitzer Space Telescope image of a glowing stellar nursery provides a spectacular contrast to the opaque cloud seen in visible light. The Elephant's Trunk Nebula is an elongated dark globule within the emission nebula IC 1396 in the constellation of Cepheus. Located at a distance of 2,450 light - years, the globule is a condensation of dense gas that is barely surviving the strong ionizing radiation from a nearby massive star. The globule is being compressed by the surrounding ionized gas. The dark globule is seen in silhouette at visible - light wavelengths, backlit by the illumination of a bright star located to the left of the field of view. The Spitzer Space Telescope pierces through the obscuration to reveal the birth of new protostars, or embryonic stars, and previously unseen young stars. The infrared image, was obtained by Spitzer's infrared array camera. The filamentary appearance of the globule results from the sculpting effects of competing physical processes. The winds from a massive star, located to the left of the image, produce a dense circular rim comprising the 'head' of the globule and a swept - back tail of gas / Bridgeman Images
PIX4622956: Planetary nebula NGC 2440 in the stern - View of planetary nebula NGC 2440 in the stern obtained by the Hubble space telescope on 6 February 2007. The star in the center of the image is a white dwarf, a star at the end of life that expels the outer layers of its material all around it. Our Sun could have a similar fate in five billion years. This star is one of the hottest in history; its temperature is 200,000 degres Celsius. NGC 2440 is located about 4000 years from Earth / Bridgeman Images
PIX4622959: Planetary nebula NGC 2818 - Planetary nebula NGC 2818 in Pyxis - The open cluster NGC 2818A in the southern constellation of the Compsole is distinguished by the fact that most of its bright stars have already become supernovae; this indicates that this cluster must be very old, perhaps a billion years. It has a planetary nebula, NGC 2818, photographed here by the Hubble space telescope in November 2008. A planetary nebula is an end-of-life star. NGC 2818 (also called PLN 261+8.1) is located about 10,000 light years from Earth. The unique planetary nebula NGC 2818 is nested inside the open star cluster NGC 2818A. Both the cluster and the nebula reside over 10,000 light - years away, in the southern constellation Pyxis (the Compasss). NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster. Open clusters, in general, are loosely bound and they disperse over hundreds of millions of years. Stars that form planetary nebulae typically live for billions of years. Hence, it is rare that an open cluster survives long enough for one of its members to form a planetary nebula. This open cluster is particularly ancient, estimated to be nearly one billion years old. The spectacular structure of NGC 2818 (also known as PLN 261+8.1) contains the outer layers of a sun - like star that were sent off into interstellar space during the star's final stages of life. These glowing gaseous shrouds were shed by the star after it ran out of fuel to sustain the nuclear reactions in its core. NGC 2818 has a complex shape that is difficult to interpret. However, because of its location within the cluster, astronomers have access to information about the nebula, such as its age and distance, that might not otherwise be known. Planetary nebulae fade away gradually over tens of thousands of years. The hot, remnant stellar core of NGC 2818 will eventually cool off for billions of years as a white dwarf. Our / Bridgeman Images
PIX4622029: Nebula of the Horse's Head (IC 434) in Orion - Nebula of the Horse's Head (IC 434) in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the nebula has emitting IC 434 about 1500 years - light of the Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergeant star belonging to the Orion Baudrier. Towards the center of the image, a reflexion nebula, NGC 2023 / Bridgeman Images
PIX4623298: Planetary Nebula M57 (NGC 6720) in the Lyre/HST - The Hubble Space Telescope has captured the sharpest view yet of M57, the Ring Nebula in Lyra, which is the most famous of all planetary nebulae. In this image, the telescope has looked down a tunnel of gas cast off by a dying star thousands of years ago. This photo reveals elongated dark clumps of material embedded in the gas at the edge of the nebula, and the dying central star floating in a blue haze of hot gas. The nebula is about a light - year in diameter, and is located some 2,000 light - years from Earth in the direction of the constellation Lyra. The colors are approximately true colors, and represent three different chemical elements: helium (blue), oxygen (green), and nitrogen (red). 16/10/1998 1hour exhibition / Bridgeman Images