Charlie Summers / Comet C/2013 R1 (Lovejoy) streaming past the star Sarin (HIP 84379) in the Hercules Constellation as it leaves perihelion (its nearest point to the sun) and returns on its orbit to outer space. Taken...

Charlie Summers / Comet C/2013 R1 (Lovejoy) streaming past the star Sarin (HIP 84379) in the Hercules Constellation as it leaves perihelion (its nearest point to the sun) and returns on its orbit to outer space. Taken...

Charlie Summers / The comet C/2012 S1 (ISON) passing through Virgo constellation during twilight on the morning of 18th November 2013. Stacked image.

Charlie Summers / The comet C/2012 S1 (ISON) passing Virgo constellation, during twilight on the morning of 18th November 2013. Digital composite image.

Charlie Summers / Comet ISON as it winds its way in orbit towards its close rondezvous with the sun on November 28 2013.

Charlie Summers / Comet C/2012 S1 (IOSN) take from Karval, Eastern Colorado, 11th November 2013.

Charlie Summers / The Comet C/2012 S1 (ISON) travelling past the constellation leo, seen from eastern Colorado, 2nd November 2013 from eastern Colorado. The bright star to the left is Sigma Leo.

Charlie Summers / Incoming comet ISON can be seen in the top left as as it moves into its perihelion (closest approach to the sun) The planet Mars can be seen in the lower right. Image taken in Eastern Colorado, USA. E...

Aflo / Y-12003 Hyakutake Comet moving across night sky

Aflo / Y-11906 Hale-Bopp comet in night sky

Jorma Luhta / Comet of McNaught, February 2006, northern Finland

Kim Taylor / Hale Bopp comet, Southern England, 1997.