what is a spiral galaxy

14Apr

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Technology

NASA Astronomy Picture of the Day 14 April 2023: Fascinating Hamburger Galaxy

[ad_1] Although most galaxies have elliptical shapes, a few have unusual shapes like toothpicks or rings. One of the most spectacular looking galaxies are the Spiral galaxies, which have winding spiral arms that make them look a little like massive pinwheels. These disks of stars, gas, and dust have bright bulges in their centers made up primarily of older and dimmer stars. Their whirled arms are typically full of gas and dust, which helps give rise to the bright, younger stars visible throughout their length.Today's NASA Astronomy Picture of the Day is a fascinating snapshot of NGC 3628, also known as the Hamburger Galaxy. It is a spiral galaxy located about 35 million light-years away towards the constellation of Leo and spans about 100,000 light-years. According to NASA, NGC 3628 sha...

23Mar

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NASA Astronomy Picture of the Day 23 March 2023: Spiral Galaxy NGC 2841

[ad_1] Today's NASA Astronomy Picture of the Day is the Spiral Galaxy, also known as NGC 2841. It is an unbarred spiral galaxy located about 46 million light-years away in the constellation of Ursa Major, which is also known as the Great Bear. According to NASA, NGC 2841 has a relatively low star formation rate as of now, in comparison to other spirals that are alight with emission nebulae.The picture of NGC 2841, which spans about 150,000 light-years, was captured by astrophotographer Roberto Marinoni. About Spiral GalaxiesAlthough most galaxies have elliptical shapes, a few have unusual shapes like toothpicks or rings. Moreover, galaxies exhibit an array of sizes, ranging from diminutive dwarf galaxies with a meager population of a few billion stars to colossal elliptical galaxies wi...

2Mar

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NASA Astronomy Picture of the Day 2 March 2023: Spiral Galaxies NGC 3169 and NGC 3166

[ad_1] Galaxies exhibit an array of sizes, ranging from diminutive dwarf galaxies with a meager population of a few billion stars to colossal elliptical galaxies with trillions of stars. According to NASA, Spiral Galaxies have winding spiral arms that make them look a little like massive pinwheels. These disks of stars, gas, and dust have bright bulges in their centers made up primarily of older and dimmer stars. Their whirled arms are typically full of gas and dust, which helps give rise to the bright, younger stars visible throughout their length.NASA's Astronomy Picture of the Day is a stellar snapshot of Spiral Galaxy NGC 3169 and its neighbour NGC 3166. NGC 3169 is located almost 70 million light-years away in the constellation of Sextans (the Sextant). According to NASA, it is pa...

23Feb

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Technology

NASA Astronomy Picture of the Day 23 February 2023: The weird Spiral Galaxy Arp 78

[ad_1] Gravity binds a galaxy, which is a vast assembly of gas, dust, billions of stars, and their respective solar systems. Galaxies exhibit an array of sizes, ranging from diminutive dwarf galaxies with a meager population of a few billion stars to colossal elliptical galaxies with trillions of stars. While most galaxies have elliptical shapes, some possess unique shapes, such as toothpicks or rings. One of the most amazing shapes in which galaxies exist is the Spiral Galaxy.NASA's Astronomy Picture of the Day is a picture of a spiral galaxy named Arp 78. It is an enormous galaxy which spans nearly 200,000 light-years across and exists almost 100 million light-years away in the constellation Aries. Arp 78 is also known as NGC 772. Alongside Arp 78, another faint galaxy can be seen, w...