Comet McNaught is lighting up the sky around dawn and dusk. This image was captured over Edinburgh by Philippe Gautier.
This was the view that Simon Banton had in Figheldean, Wiltshire, of the brightest comet in 30 years.
Mark Edwards in Coventry asked why we didn't have comet pictures on the site - thanks for the reminder, and the image.
Comet McNaught was discovered last year by Australian Robert McNaught. This was John Owen's view from Aberdeen an hour after sunset.
Comet McNaught is passing close to the Sun. Solar radiation pressure and heat take material off the comet, giving it a big and visible 'debris field', seen in Leeds by Paul Willows.
Dan Escreet in Aldbrough, Yorkshire, captured this image. The comet will be seen better in the coming days from the southern hemisphere.