YOUR correspondent, Mr. Earwaker, should have mentioned that the list of appearances of the Aurora Borealis given in M. de Mairan's work is chiefly derived from another enumeration in Prof. Frobes ...

Orion Nebula: This nebula, referred to as De Mairan's Nebula, is divided from the Orion Nebula by a dark lane of dust. This picture depicts young stars forming a gap in the star-forming area known ...