Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles, you'll see a variety of tints glisten, causing you to question what color ...

Skoltech researchers and their colleagues from Ludwig Maximilian University of Munich, Germany, Nanjing University of China, ...

Scientists have discovered over 6,000 planets that orbit stars other than our sun, known as exoplanets. More than half of ...

Learn how to spot Sirius, Procyon and their canine constellations, and discover the myths and science behind the dog stars.