In 1895, when English photographer Paul Martin began making photographs of London at night ... night sky. A pioneer in the field he painstakingly explored, researched, and taught the art of ...

An exposure longer than about 25 seconds will start to show star trails and capture their movement as they travel across the night sky, so experiment with timings. Generally, the rule of thumb is to ...

Seven planets are aligning in the night sky this week, creating a brief chance to see a "planetary parade." Worldwide, the best day to see the alignment is today, Feb. 28. Mercury, Venus ...