Optimal observation of Mercury occurs during its greatest eastern or western elongations, maximizing its distance from the Sun and improving visibility; yellow or orange filters can enhance viewing.

During the 1240s, Richard Fishacre, a Dominican friar at Oxford University, used his knowledge of light and color to show ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Fiery rose and peach sunset skies are a unique perk of our home on Earth. But what colors appear ...

Neptune has long been depicted as a deeper, darker blue than its fellow ice giant Uranus, but a new study shows that both are a similar shade of... Don't look so blue, Neptune: Now astronomers know ...

In 1989, Voyager 2 became the first and only spacecraft to ever fly by Neptune, and images from that mission famously show a planet that's a deep azure color. But in reality, Neptune is far more of a ...