Astronomy Picture of the Day . Simeis 188 in Stars, Dust and Gas . ... A particularly colorful case is the star forming region Simeis 188 which houses an unusual and bright cloud arc cataloged as NGC 6559. ... A Sundial that Shows Solstice . ... Only then will the Sun be located just right for sunlight to stream through openings and spell out the term for the longest and shortest days of the year. ... As seen from Fr s n island in northern Sweden the Sun did set a day after the summer solstice. ...