Venus will pass between the Earth and sun during what’s called an inferior conjunction. But don’t plan on seeing the linkup.

The first probe to use solar radiation pressure as a major means for orientation during flight was NASA's 1970s-era Mariner 10, which caught sunlight on its solar panels and high-gain antenna.

After Mariner 10, Flandro's supervisor asked him to explore ... Eventually, Flandro and the team revealed that with gravity assist, NASA could take twenty years off a direct flight from Earth ...

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 ...

One of history’s most infamous coding mistakes—an absent hyphen—led to the destruction of NASA’s Mariner 1 spacecraft just moments after launch, costing the agency a staggering $18.5 million.

An curved arrow pointing right. 2015 marked 50 years of successful NASA missions to Mars which started with Mariner 4 in 1965. These are the NASA rovers and satellites currently exploring the planet.

This image provided by NASA/JPL-Caltech shows Venus taken from NASA's Mariner 10 spacecraft. (NASA/JPL-Caltech via AP) NEW YORK (AP) — Venus will pass between the Earth and sun on Saturday ...