Thomas says this goes for all outer planets: Jupiter, Uranus, Neptune and Pluto. “Jupiter and Saturn are the only outer planets that the ancients were aware of in previous times,” explains Thomas.

When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...

The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's ...

To understand what happened to Pluto, we must actually go back ... eventually showed it to be much smaller than Jupiter, Saturn, Uranus, and Neptune. In many ways it more nearly resembled Triton ...

NASA's Juno revealed mushballs on Jupiter, reshaping our understanding of deep, violent gas giant storm systems.

The discovery of natural satellites on Saturn assists researchers in understanding the dynamics of orbits, resonances, and the stability of planetary systems in general ...

"It was so stunning to not just see the auroras, but the detail and clarity of the signature really shocked me." For the first time, astronomers have captured direct images of Neptune's elusive ...