• Musca Borealis
  Musca Borealis
  Musca Borealis was a constellation located between the constellations of Aries and Perseus.It was first described as such by Hevelius in his catalogue of 1690, to distinguish it from the southern fly, Musca Australis....
  
   – a constellation
• Aurora (astronomy)
  Aurora (astronomy)
  An aurora is a natural light display in the sky particularly in the high latitude regions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere...
  
   – a bright glow observed in the night sky
• Corona Borealis
  Corona Borealis
  Corona Borealis is a small constellation in the northern sky. Its name is Latin for "northern crown", a name inspired by its shape; its main stars form a semicircular arc. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and remains one of the 88 modern...
  
   – a constellation
• Borealis quadrangle
  Borealis quadrangle
  The Borealis quadrangle is a quadrangle on Mercury surrounding the north pole down to 65° latitude .It contains the Goethe Basin, whose diameter of at least makes it the sixth-largest impact basin observed on Mariner 10 images and the seventh-largest known with the discovery of Skinakas Basin...
  
   – an area on the planet Mercury
  Mercury (planet)
  Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...
  
  
• Borealis – a fictional ship mentioned in Half-Life 2: Episode Two
  Half-Life 2: Episode Two
  Half-Life 2: Episode Two is the second episode in a series of sequels to the 2004 first-person shooter video game Half-Life 2. It was developed by Valve Corporation in tandem with Episode One, the first game in the series, and released in Q4 2007 via Valve's Steam content distribution platform...
  
  
• Borealis – a selective-fire submachine gun version of the Canadian NAACO Brigadier
  NAACO Brigadier
  The North American Arms Corporation Brigadier was developed to meet Canadian requirements for a service handgun in the aftermath of World War II. It was based largely on the FN GP35 Hi-Power self-loading pistol of 1935, but scaled up significantly...
  
   pistol

Commerce

• Borealis
  Borealis
  Borealis AG is Europe's second largest producer of polyethylene and polypropylene and is headquartered in Vienna, Austria.-Overview:...
  
   – a plastics company
• Boreal Information Strategies – a software company for sustainable mining and petroleum projects
• Borealis Exploration Limited
  Borealis Exploration Limited
  Borealis Exploration Ltd. is a Gibraltar-based research and development company that owns subsidiaries dealing with materials and power transfer...
  
   – an R&D company
• The Borealis Recording Co. Ltd. – a folk record label
  Record label
  In the music industry, a record label is a brand and a trademark associated with the marketing of music recordings and music videos. Most commonly, a record label is the company that manages such brands and trademarks, coordinates the production, manufacture, distribution, marketing and promotion,...