WHAT YOU NEED: A ruler, pens, scissors and paper. Image caption, STEP 1 - TRAPEZIUM x 2: On a rectangular piece of paper, use a ruler to draw two angled lines from the bottom corners to make a ...

While they have been spotted in abundance in young star clusters such as the Trapezium Cluster in Orion (Fig. 1), their origin has puzzled scientists. Traditional theories have suggested that they ...