Previous studies that used the Hertzsprung-Russell diagram — a tried-and-true chart that traces a star's age through its luminosity and temperature — placed the star at about 8 billion years old.

If you get away from city lights and witness the astonishing beauty of the night sky, most of the stars you can see are part of what is known as the “main sequence”. The few that aren’t part of it get ...

Our star chart is designed to get you out learning the night sky within a matter of moments. Just set it for your time and location, make a few tweaks if you like for personal taste, and print it out.

Here are some tools to help you get started. Your Sky Tonight, our digital star chart can be customized for your date and location; you can even set it to get the most suitable results depending ...

Planets in the box have the right atmospheric pressure and the right temperature to keep surface ... The cold gas giants are literally off the chart. The logarithmic scale used initially here ...