Delving into the Vast Abyss: Fifteen Unsolved Mysteries in Science that Leave Experts Scratching Heads

The Pioneer Anomaly

In the early 1980s, scientists noticed that the Pioneer 10 and 11 spacecrafts were veering off their predicted paths. This deviation, known as the Pioneer anomaly, couldn't be explained by known physics. While recent studies suggest that it could be due to thermal radiation, the Pioneer anomaly remains a controversial topic in astrophysics.