Star Trails over Bourke.

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Image Credit: Photograph by Ron Pantekoek.
“This is a composite image consisting of 150 images to create the star-trails, one image for the truck ‘moving’ head and tail lights, and one for the foreground.
All images were taken on the same night just outside the city limits of Bourke, New South Wales, Australia, and took several hours to make.”
Source: Your pictures: Best of 2016 – BBC News

Aurora Panorama 3, Lyngenfjord.

2000Aurora Panorama 3

The vivid green Northern Lights dance above Lyngenfjord, Norway, tracing out the shape of the Earth’s magnetic field above the waters.
Green, the most common colour associated with aurorae, is produced by oxygen atoms and molecules energised by the impact of solar particles that have escaped the sun’s atmosphere, causing them to glow brightly
Image Credit: Photograph by Jan R Olsen
See more stunning Images via Insight Astronomy Photographer of the Year 2015 shortlist – in pictures | Science | The Guardian.