Here’s how it works. NASA and the European Space Agency (ESA) just released a stunning image of the NGC 346 star cluster from the Hubble Space Telescope — but it isn't quite "new." Rather ...

Image caption, STEP 4 - ARCS FOR STAR POINTS: Put the spike of the compass at the bottom of the circle and set the width to the NEAREST point on the small circle. Draw an arc with this radius and ...