The night-sky models enabled him to later identify the planets in the image. Planetary conjunctions occur when two or more planets appear to be close together in the sky. Of course, this is only ...

While the tidal pull of each planet on the Sun is extremely small, Stefani says that when two or more of the planets line up with the Sun – known as a syzygy – they might combine to cause ...

Now, astronomers know that planets orbit the two closest star systems to our solar system. Barnard’s Star has served as a ...

TWO OF THE SEVEN PLANETS ... These planetary hangouts happen when several planets appear to line up in the night sky at once. They're not in a straight line, but are close together on one side ...