When you take a look deep into the night sky, Venus might look like it's noticeably yellow. Here's the science behind why it appears that way.

Prior to visiting Mercury, Mariner 10 zipped past Venus, making it the first probe in history to fly by more than one planet. In January 1974, the spacecraft captured an ultraviolet view of Venus ...

Venus (true color & enhanced contrast) as seen by the Mariner 10 spacecraft in 1974. (Source: NASA/JPL-Caltech) Exactly why Venus has such a dense atmosphere is also unknown. Its atmosphere ...