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New Pictures Present Andromeda Galaxy as You’...

Andromeda lies 2.5 million light-years away from the Milky Approach, a spiral galaxy much like our personal that has allowed scientists to raised perceive our galactic dwelling. A brand new composite picture reveals our closest galactic neighbor in 5 totally different wavelengths of sunshine, mixed collectively to create a stunningly detailed view of Andromeda.

Telescopes seize photos in several wavelengths by observing a particular a part of the electromagnetic spectrum, from low-frequency radio waves to extraordinarily high-frequency gamma rays. By utilizing totally different wavelengths, astronomers are capable of see much more of the cosmos, whether or not it’s glowing mud and stars or colliding galaxies.

X-ray: NASA/CXO/UMass/Z. Li & Q.D. Wang, ESA/XMM-Newton; Infrared: NASA/JPL-Caltech/WISE, Spitzer, NASA/JPL-Caltech/Okay. Gordon (U. Az), ESA/Herschel, ESA/Planck, NASA/IRAS, NASA/COBE; Radio: NSF/GBT/WSRT/IRAM/C. Clark (STScI); Ultraviolet: NASA/JPL-Caltech/GALEX; Optical: Andromeda, Surprising © Marcel Drechsler, Xavier Strottner, Yann Sainty & J. Sahner, T. Kottary. Composite picture processing: L. Frattare, Okay. Arcand, J.Main

For the newest picture of Andromeda, also referred to as M31, astronomers featured X-ray knowledge from NASA’s Chandra Observatory, revealing the high-energy radiation across the supermassive black gap on the middle of the galaxy.

The X-ray knowledge, captured by the European Area Company’s XMM-Newton, is proven in pink, inexperienced, and blue. Ultraviolet knowledge from NASA’s retired GALEX is in blue; infrared knowledge from NASA’s retired Spitzer Area Telescope, the Infrared Astronomy Satellite tv for pc, COBE, Planck, and Herschel is in pink, orange, and purple; and radio knowledge from the Westerbork Synthesis Radio Telescope is in red-orange, in line with NASA. Astrophotographers Jakob Sahner and Tarun Kottary supplied some optical knowledge utilizing ground-based telescopes.

Andromeda is a basic spiral, with sleek arms that rotate round a central bulge. It stretches throughout 220,000 light-years, twice the scale of the Milky Approach. The 2 galaxies are on an unlucky collision course with each other and are anticipated to merge in about 4.5 billion years. Or maybe not, as analysis printed earlier this month steered.

Astronomers additionally transformed the multi-wavelength knowledge to sound, creating an attractive tune from Andromeda’s mud lanes and star clusters. To create Andromeda’s new music, scientists separated the layers captured by every telescope and stacked them on prime of one another horizontally, starting with X-rays on the prime after which transferring by ultraviolet, optical, infrared, and radio on the backside.

Every sort of sunshine is mapped to a distinct vary of notes, from lower-energy radio waves all through the excessive vitality of X-rays. The brightness of every supply controls the quantity of the galactic music, and the vertical location dictates the pitch.

The most recent composite picture of Andromeda was launched in honor of legendary astronomer Vera Rubin, who found proof for darkish matter by measuring the rate of stars within the spiral galaxy. Within the Nineteen Sixties, Rubin rigorously noticed Andromeda and decided that unseen matter was affecting how the galaxy’s spiral arms rotated. Earlier this week, the Vera C. Rubin Observatory, named after the pioneering astronomer, released its very first images of the cosmos.

 

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