These are the year's best astronomy photographs.

 

The best astronomy photos of the year draw the viewer's eye upward and outward, revealing breathtaking views like auroras above Earth and visions of a star nursery 554 light-years away.

 

These photographs, from the finalists in the Royal Observatory Greenwich's 13th annual Astronomy Photographer of the Year competition, are a lovely reminder of the universe's immensity and age. One image, taken by photographer James Rushforth, depicts the comet NEOWISE streaking by Earth 6,800 years ago, passing over Stonehenge, and a site that didn't even exist at the time.

 

Held in cooperation with BBC Sky at Night magazine, the competition drew more than 4,500 entries from 75 different countries. Winners in 12 categories will be announced on September 16, 2021, and the winning photographs will be exhibited in the National Maritime Museum in London. Here are the shortlisted competitors.

A Daytime Transit 



In this daytime image, the International Space Station moves across a fading crescent moon. Photographer Andrew McCarthy of Elk Grove, California, captured the photographs using two cameras and two telescopes, which he then combined into a continuous panorama.

 

McCarthy utilised a Celestron EdgeHD800 telescope at f/10, a Hobym Traveller mount, a ZWO ASI174MM camera, and a 1,000 x 1-millisecond exposure for the monochrome image. He used an Orion XT10 telescope at f/10, a Hobym Traveller mount, a Sony A7II camera, ISO 200, and a 1-millisecond exposure for the colour.)

 Aurora in Murmansk



In this snapshot taken in January 2020, the aurora borealis outshines the lights of Murmansk, Russia. Vitaliy Novikov had to wait for a large solar flare in order to see the aurora despite the city lights.

(To photograph the skylights, Novikov used a Nikon D850 camera with a 24 mm f/5.6 lens, ISO 1000, and an exposure time of 0.8 seconds.)

 Bicolor Veil Nebula



This image was created by stitching together images of the Veil Nebula obtained in June, July, and August of 2020. The nebula is the remnant of a huge star's death throes, a supernova explosion. The photo was taken in Hungary's Pest County.

(The photographer utilised a SkyWatcher 200/800 Newton Astrograph telescope set to f/4.6, Astronomik Ha and OIII filters, a SkyWatcher NEQ6 Pro mount, a Moravian G3-16200 Mark II camera, and a total exposure time of 12 hours.)

Ch√Ęteau de Chambord






This chateau in France's Centre-Val de Loire was a photographer's dream and a struggle for Benjamin Barakat of the United Kingdom, who had to take photos during minute-long breaks in the castle's lights, which happened every 15 minutes.

 

(Baraket used a Sigma Art 40 mm telescope, an iOptron SkyTracker Pro mount, and a Canon 6D Baader modded camera.) Baraket used a 40 mm f/2.8 lens, ISO 3200, 4 x 30-second exposures for the foreground, and a 40 mm f/2 lens, ISO 1600, 8 x 30-second exposures for the sky.)

 Dolphin Head Nebula



The Dolphin Head Nebula is located in the constellation Canis Major, at the centre of the constellation. Sri Lankan Yovin Yahathugoda used the Telescope Live remote telescope in Chile to obtain this image. The stunning image is the culmination of three nights of difficult weather and 90 minutes of exposure time.

(Yahathugoda used an ASA 500N telescope at f/3.8, Astrodon filters, an ASA DDM85 Premium mount, a FLI PL16803 camera, and a 1.5-hour total exposure using the Ha-OIII composite.)


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