#nebula

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A giant cosmic necklace glows brightly in this Hubble Space Telescope image. The object, aptly named the Necklace Nebula, is a recently discovered planetary nebula, the glowing remains of an ordinary, Sun-like star.

Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

This Hubble image captures a portion of a dark nebula in the constellation Cepheus. Dark nebulae ― also called absorption nebulae ― are clouds of gas and dust that neither emit nor reflect light, instead blocking light coming from behind them. These nebulae tend to contain large amounts of dust, which allows them to absorb visible light from stars or nebulae beyond them.

Credit: NASA, ESA, T. Megeath (University of Toledo), and K. Stapelfeldt (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America)



This comparison view shows puffing dust bubbles and an erupting gas shell — the final acts of a monster star.

AG Carinae is formally classified as a Luminous Blue Variable because it is hot (blue), very luminous, and variable. Such stars are quite rare because there are not many stars that are so massive. Luminous Blue Variable stars continuously lose mass in the final stages of their life, during which a significant amount of stellar material is ejected into the surrounding interstellar space, until enough mass has been lost that the star has reached a stable state.

AG Carinae is surrounded by a spectacular nebula, formed by material ejected by the star during several of its past outbursts. The nebula is approximately 10 000 years old, and the observed velocity of the gas is approximately 70 kilometres per second. While this nebula looks like a ring, it is in fact a hollow shell rich in gas and dust, the centre of which has been cleared by the powerful stellar wind travelling at roughly 200 kilometres per second.

Credits: ESA/Hubble and NASA, A. Nota, C. Britt

This image shows knots of cold, dense interstellar gas where new stars are forming. These Free-floating Evaporating Gaseous Globules (frEGGs) were first seen in Hubble’s famous 1995 image of the Eagle Nebula. Because these lumps of gas are dark, they are rarely seen by telescopes. They can be observed when the newly forming stars ignite, their intense ultraviolet radiation eroding the surrounding gas away and letting the denser, more resistant frEGGs remain. These frEGGs are located in the Northern Coalsack Nebula in the direction of Cygnus.

Credit: NASA, ESA, and R. Sahai (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America)

Horsehead Nebula

Credit:john.purvis

M97: The Owl Nebula

The Owl Nebula is perched in the sky about 2,600 light-years away toward the bottom of the Big Dipper’s bowl. Also cataloged as M97, the 97th object in Messier’s well-known list, its round shape along with the placement of two large, dark “eyes” do suggest the face of a staring owl. One of the fainter objects in Messier’s catalog, the Owl Nebula is a planetary nebula, the glowing gaseous envelope shed by a dying sun-like star as it runs out of nuclear fuel.

Credit:Keith Quattrocchi

Very faint but also very large on planet Earth’s sky, a giant Squid Nebula cataloged as Ou4, and Sh2-129 also known as the Flying Bat Nebula, are both caught in this cosmic scene toward the royal constellation Cepheus.

Image Credit: Rolf Geissinger

I started doing watercolor paintings! I’m in *love* with my first piece!!

I started doing watercolor paintings! I’m in *love* with my first piece!!


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got a couple bugborg requests and i’d been wanting to draw cute underwear so!!!!

got a couple bugborg requests and i’d been wanting to draw cute underwear so!!!!


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“Across the sea of space, the stars are other suns.”—Carl Sagan

l Nebulae & Stars taken by Nick Perkins

nebula

It’s easy to get lost following the intricate, looping, twisting filaments in this detailed image of supernova remnant Simeis 147 or, as it’s better known as, the Spaghetti Nebula. Seen about 3,000 light years away, toward the boundary of the constellations Taurus and Auriga, it covers nearly 3 degrees or 6 full moons on the sky- about 150 light-years wide. This composite image includes data taken through narrow-band filters where the reddish emission is from ionized hydrogen atoms and doubly ionized oxygen atoms is in faint blue-green hues. The supernova remnant has an estimated age of about 40,000 years, meaning light from the massive stellar explosion first reached Earth 40,000 years ago. But the expanding remnant is not the only aftermath. The cosmic catastrophe also left behind a spinning neutron star, or pulsar. It’s all that remains of the original star’s core.

Happy new year everyone!

Image Credit & Copyright: Jason Dain

The Crab Nebula is cataloged as M1, the first object on Charles Messier’s famous 18th century list of things which are not comets. In fact, the Crab is now known to be a supernova remnant, debris from the death explosion of a massive star, witnessed by astronomers in the year 1054. This sharp, ground-based telescopic view combines broadband color data with narrowband data that tracks the emissions from ionized sulfur, hydrogen, and oxygen atoms to explore the tangled filaments within the still expanding cloud. One of the most exotic objects known to modern astronomers, the Crab Pulsar, a neutron star spinning 30 times a second, is visible as a bright spot near the nebula’s center. Like a cosmic dynamo, this collapsed remnant of the stellar core powers the Crab’s emission across the electromagnetic spectrum. Spanning about 12 light-years, the Crab Nebula is a mere 6,500 light-years away in the constellation Taurus.

Image Credit & Copyright: Michael Sherick

Halloween’s origin is ancient and astronomical. Since the fifth century BC, Halloween has actually been celebrated as a cross-quarter day, a day halfway between an equinox (equal day / equal night) and a solstice (minimum day / maximum night in the northern hemisphere). With a modern calendar however, even though Halloween occurs next week, the real cross-quarter day will occur the week after. Another cross-quarter day is Groundhog Day!

Halloween’s modern celebration retains historic roots in dressing to scare away the spirits of the dead. Perhaps a fitting tribute is this view of the Ghost Head Nebula (NGC 2080) taken with the Hubble Space Telescope. Similar to the icon of a fictional ghost, it is actually a star forming region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way Galaxy. The nebula spans about 50 light-years and is shown in representative colors.

Image Credit: Mohammad Heydari-Malayeri (Observatoire de Paris) et al., ESA, NASA

The Ring Nebula (M57), is more complicated than it appears through a small telescope. The easily visible central ring is about one light-year across, but this remarkably deep exposure shows in detail the looping filaments of glowing gas extending much farther from the nebula’s central star. This image, taken by combining data from three different large telescopes, includes red light emitted by hydrogen as well as visible and infrared light. The Ring Nebula is an elongated planetary nebula, a type of nebula created when a Sun-like star evolves to throw off its outer atmosphere to become a white dwarf star. The Ring Nebula is about 2,500 light-years away from us here on Earth.

Image Credit: Hubble, Large Binocular Telescope, Subaru Telescope; Composition & Copyright: Robert Gendler

An enhanced Scorpius constellation!! If it looked this good to the unaided eye, we might might remember it better, typically appears as a few bright stars in a constellation. To get a spectacular image like this, though, you’d need a good camera, a dark sky, and some sophisticated image processing. The resulting digitally-enhanced image shows many breathtaking features. Diagonal across the right side of the image is part of the Milky Way Galaxy. Visible there are vast clouds of bright stars and long filaments of dust. Rising vertically on the left are dark dust bands known as the Dark River. Several of the bright stars on the left are part of Scorpius’ head and claws, and include the bright star Antares. Numerous red emission nebulas, blue reflection nebulas, and dark filaments are visible as well. Scorpius appears prominently in southern skies after sunset during the middle of the year.

Image Credit & Copyright: Stefan Lenz

This insanely detailed scene of a portion of our universe has so many famous stars and nebulae in it! Let’s dive in!! Starting on the far upper left, toward the constellation of Auriga, is the picturesque Flaming Star Nebula (IC 405). Continuing down along the bright arc of our Milky Way Galaxy, from left to right crossing the constellations of the Twins and the Bull, notable appearing nebulas include the Tadpole, Simeis 147, Monkey Head, Jellyfish, Cone and Rosette nebulas. In the upper right quadrant of the image, toward the constellation of Orion, you can see Sh2-264, the half-circle of Barnard’s Loop, and the Horsehead and Orion nebulas. Famous stars in and around Orion include, from left to right, orange Betelgeuse (just right of the image center), blue Bellatrix (just above it), the Orion belt stars of Mintaka, Alnilam, and Alnitak, while bright Rigel appears on the far upper right. This region was captured on 34 separate images, taking over 430 hours of exposure, and digitally combined to reveal the featured image.

Image Credit & Copyright: Alistair Symon

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