A reflection nebula is a cloud of interstellar dust that becomes visible due to the light from nearby stars reflecting off its particles. Unlike emission nebulae, reflection nebulae do not emit their own light but shine by scattering the light of nearby stars.
Source: science.nasa.gov

16/12/2015

05/11/2015

04/11/2015

30/10/2015

06/07/2015

11/06/2015

22/05/2015

13/05/2015

22/04/2015

22/02/2015

08/01/2015

05/01/2015

19/12/2014

20/11/2014

11/11/2014

02/08/2014

27/07/2014

23/07/2014

04/05/2014

26/03/2014

06/03/2014

25/02/2014

31/12/2013

28/11/2013

29/10/2013

12/09/2013

09/09/2013

25/07/2013

11/07/2013

07/07/2013