what is nebula – pressnews

19Jun

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NASA Astronomy Picture of the Day 19 June 2023: Spooky Lagoon Nebula!

[ad_1] Nebulae are vast cosmic formations consisting of dust and gas -- which originate from various sources, such as the ejected material of a dying star, like a supernova explosion. Moreover, certain nebulae serve as fertile grounds where the birth of new stars begins. That's why, these particular nebulae are often known as "star nurseries." One such nebula is the Lagoon Nebula.Today's NASA Astronomy Picture of the Day is a spooky snapshot of the center of the Lagoon Nebula. In this image, in the heart of the Lagoon Nebula, a breathtaking spectacle of star formation unfolds. NASA has explained that positioned near the center of the captivating image, two elongated, funnel-shaped clouds emerge, stretching about half a light-year in length. These magnificent formations are the result of...

5Jun

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NASA Astronomy Picture of the Day 5 June 2023: Breathtaking Trifid Nebula

[ad_1] Over the past few months, we've seen several amazing snapshots of celestial objects as part of NASA Astronomy Picture of the Day, which is published on a daily basis featuring astrophotographers from around the world. Some of these celestial bodies belong to the catalogue of Messier Objects, a set of 110 objects catalogued by French astronomer Charles Messier. Messier studied and catalogued these objects in Catalogue des Nébuleuses et des Amas d'Étoiles and the catalogue is today known as the Messier Objects. Although Messier was an avid comet hunter, some of his most amazing discoveries include several nebulae such as the Crab Nebula, Dumbbell Nebula, the Pleiades star cluster, and more.Today's NASA Astronomy Picture of the Day is a snapshot of M20, also known as the Trifid Nebu...

1May

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NASA Astronomy Picture of the Day 1 May 2023: The Great Carina Nebula

[ad_1] A Nebula can contain as few as ten stars or as many as millions of stars, according to NASA. Although most nebulae belong to just three types - spherical, elliptical and bipolar, some of them might be irregularly shaped, so much so that they resemble objects on Earth. Despite the seemingly great distances at which nebulae are located, advanced technology such as the Spitzer Space Telescope, the Hubble Space Telescope, and the newly launched James Webb Space Telescope has enabled NASA to observe and study these amazing celestial objects.Today's NASA Astronomy Picture of the Day is NGC 3372, also known as the Great Carina Nebula which is located in the constellation of Carina. This star-forming region is about 8500 light-years away and spans over 200 light-years across. The Great C...

16Apr

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NASA Astronomy Picture of the Day 16 April 2023: RARE nebula in butterfly avatar

[ad_1] Do stars tend to display their most artistic avatars during their demise? It seems so! A nebula is basically an enormous cloud formed due to the gas and dust thrown out by the explosion of a dying star. While some nebulae are the regions where new stars are beginning to form, they basically work as a womb that births stars! In every case, these nebulae emerge as artistic wonders.Today, NASA has featured just such a breathtaking image of M2-9 nebula which looks like the wings of a butterfly. NASA says, "In the case of low-mass stars like our Sun and M2-9 pictured here, the stars transform themselves from normal stars to white dwarfs by casting off their outer gaseous envelopes." A stunning exhibition known as a planetary nebula is often produced by the expended gas, which graduall...

HISTORIC! NASA’s IXPE captures Crab Nebula like never before

9Apr

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HISTORIC! NASA’s IXPE captures Crab Nebula like never before

[ad_1] The Crab Nebula has been part of several studies by astronomers. It began back on February 22, 1971, when a sounding rocket took off carrying specialized sensors directed towards the Crab Nebula from Wallops Island, Virginia. Later on, Martin Weisskopf, an astronomer, suggested the creation of an Earth-orbiting satellite, equipped with advanced instruments to obtain more comprehensive data on the Crab Nebula and other enigmatic cosmic entities. This idea eventually emerged with NASA's Imaging X-ray Polarimetry Explorer (IXPE), which was launched on December 9, 2021.Following over five decades since the sounding rocket trial, scientists have used IXPE to produce a comprehensive and intricate depiction of the Crab Nebula's magnetic field, revealing more about its inner mechanics th...

9Apr

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NASA Astronomy Picture of the Day 9 April 2023: 3000 light years away, a mysterious Nebula

[ad_1] A nebula is a massive cloud composed mainly of hydrogen and helium gas along with dust. Nebulae can originate from the debris ejected by a dying star, like a supernova, or from areas where new stars are taking shape, earning the name "star nurseries." While the dust and gases in a nebula are widely dispersed, gravity can still cause them to come together to form larger clumps. As these clumps increase in size, their gravitational force also becomes more potent.There are several types of nebulae. However, on a wider range, there are five types of nebulae -- Emission Nebula, Reflection Nebula, Dark Nebula, Planetary Nebula, and Supernova Remnant. One of these pre-Planetary Nebula, featured as the NASA Astronomy Picture of the Day, is the mysterious Egg Nebula. Yes, you read that ri...

29Mar

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NASA Astronomy Picture of the Day 29 March 2023: Stunning Dolphin-Head Nebula

[ad_1] Nebulae are places where stars are birthed. The makeup of a Nebula consists of gases, mainly hydrogen and helium. Although most nebulae belong to just three types - spherical, elliptical and bipolar, some of them might be irregularly shaped, so much so that they resemble objects on Earth. Some of the most peculiar shapes include the Headphone nebula, the Heart and Soul nebula and the Flying Ghost nebula. One of the most easily recognizable nebulae is the Dolphin-Head nebula, which just looks like a dolphin's head floating in space.Today's NASA Astronomy Picture of the Day is the Dolphin-Head nebula, located about 5000 light-years away from Earth towards the constellation of Canis Major, also known as the Big Dog. This weirdly fascinating nebula is about 70000 years old and spans ...

21Mar

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NASA Astronomy Picture of the Day 21 March 2023: Dark Nebulae and the Taurus Molecular Cloud

[ad_1] When gas, dust and plasma get accumulated in space, it usually leads to the formation of interstellar clouds. Initially, these clouds are hot in nature but when they become dense and cool enough, molecules form inside them, giving them the name of Interstellar Molecular Clouds. Molecular clouds are places where stars first form and they help astronomers in learning about the earliest stages of stars. According to NASA, these celestial objects are so dense that the dust within blocks visible wavelengths of light. Telescopes that see visible light only detect ghostly dark patches in the sky, called Dark Nebulae.Today's NASA Astronomy Picture of the Day is a fascinating snapshot of the dark nebulae and the star formation in the Taurus Molecular Cloud (TMC). Located about 400 light-...

6Feb

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NASA Astronomy Picture of the Day 6 February 2023: Heart of the Rosette Nebula

[ad_1] A breathtaking image of a nebula, which is around 5200 light-years away from Earth has been featured as the NASA Astronomy Picture of the Day. While explaining the image, NASA says in the heart of the Rosette Nebula, there lies a bright cluster of stars that light up the nebula. NGC 2244's stars only formed a few million years ago from the surrounding gas. The center of the Rosette Nebula, visible through binoculars in the Monoceros constellation, measures about 50 light-years in diameter.NASA further mentioned that the featured image was captured in mid-January using multiple exposures and specific colours. Sulfur is shown in red, Hydrogen in green, and Oxygen in blue, providing a highly detailed view of the central region. A hot wind of particles from the cluster stars contrib...

4Feb

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NASA Astronomy Picture of the Day 4 February 2023: A nebula-3200 light years away

[ad_1] Nebula is nothing but the beginning of a star! How? NASA explains that Nebulae are composed of dust and gaseous matter, primarily hydrogen and helium. Despite being dispersed, gravity can cause clumps of dust and gas to converge over time, leading to increased gravitational pull. Once these clumps become substantial, they collapse under their own gravity, heating up the central material and forming the beginnings of a star.Today's NASA's Astronomy Picture of the Day is NGC 2626, a beautiful, bright, blue reflection nebula in the southern Milky Way which is centered in this colourful cosmic canvas. NGC 2626 is located near a dusty cloud and encircled by reddish hydrogen emissions from the H II region RCW 27. It is part of a group of dusty molecular clouds called the Vela Molecula...